Alta Dynamics Knowledge Center - User contributions [en]

Airfoil Analysis

2016-02-20T15:09:31Z

Altadyna: /* Definitions */

This tutorial works through the steps to create a 2d airfoil analysis.

=Airfoil geometry=
There are three ways to have an airfoil.
:Users can create an airfoil using CAD software and save it into an IGS or STL file. Then Polaris CFD can import this file just as it imports any other geometries.

:Polaris CFD can import 2d x y coordinates of an airfoil profile to generate an closed airfoil extruded in z direction. The profile is a text file with the extension .dat.

:Polaris CFD can also generate NACA 4-digit airfoils directly. In this case users can control the mesh density of the generated airfoil.

To begin this tutorial, create a folder and copy "sg6043.dat" to this folder. "sg6043.dat" is in UIUC Airfoil Coordinates Database [http://m-selig.ae.illinois.edu/ads/coord_database.html].

Run Polaris Viewer, import "sg6043.dat". Click and select "Surface with edges".

[[File:Pviewer_sg6043.png|SG6043 airfoil in Polaris Viewer|500px]]

Next click on menu "Setup->Derived->Bounding Box", a bounding box of the airfoil is created. Change the name of the box to "simd" by double clicking "Box1" in the "Pipeline Browser". Then set X length and Y length to 25 and 20 respectively. Set the center of the "simd" box to (2.5, 0, 0.5). Click on "Apply" button in the "Properties" panel.

Next click on "sg6043.dat" in the "Pipeline Browser", and then click on menu "Setup->Derived->Bounding Box", another bounding box of the airfoil is created. Rename this bounding box to "vr". Set X and Y lengths to 3 and 2.4 respectively and center it at (0.8, 0., 0.5).

Click on "Save Project" and give a name of the project.

=Setup the case=
==Definitions==
Click on menu "Setup->Definitions". In the "Vectors and velocities" dialog click on vector "vx0" and set its magnitude to 60. This will be the incoming flow velocity. Hit "OK" to apply the change and close the dialog.

Click on menu "Setup->Case Setup". In the "Case Setup" dialog, there are multiple tabs. Set the following (accept all other default values):

{| border="1" | style="margin: 0 auto;"
|+ Case parameters
! scope="col" | Tab Page
! scope="col" | Parameter Name
! scope="col" | Enter or Select Value
|-
| Global || Model dimension || 2D
|-
| Global || Analysis type || Turbulence k-e model
|-
| Global || Characteristic velocity || 60
|-
| Global || Comments || tutorial to setup a 2d airfoil, Re=300,000
|-
| Refinement || Simd length unit || meter
|-
| Refinement || Finest voxel size || 0.005
|-
| Refinement || Finest level || 6
|-
| Materials/Air || Kinematic viscosity || 0.0002
|-
| Simulation domain || Bottom (-Y) || wall, frictionless
|-
| Simulation domain || Top (+Y) || wall, frictionless
|}

Click on the "Inlet/outlet" tab, then select "velo_in" to check the turbulence intensity. Use the default values if you do not wish to make a change.

Next click on "OK" to accept and close this dialog. The Reynolds number for this analysis is 300,000.

Save the project.

==Assigning BC==
Make sure that object "sg6043.dat" is highlighted in the "Pipeline Browser". In the BC panel, click "Solid" and then select "Regular Wall". Hit "Apply BC" on the top.

Click on "simd" in the "Pipeline Browser". In the BC panel, click on "Fluid" and then select the material "Air" and set the initial condition to "ic". Check "VR" and set it "0 coarsest". Click on "Apply BC".

Click on "vr" in the "Pipeline Browser". In the BC panel, check "VR" and set it "6 finest". Click on "Apply BC".

Save the project again.

==Attack Angle==

In Polaris CFD attack angle can be applied at the inlet by changing the velocity vector or at the airfoil by rotating the geometry. In this tutorial the attack angle is applied on the latter. Click on "sg6043.dat" in the "Pipeline Browser", in the "Properties" panel, enter -6 for the z component (third box from the left) of the "Orientation".



{| style="margin: 0 auto;"
| [[File:Sg6043_attack0.png|thumb|400px|attack angle = 0 degrees]]
| [[File:Sg6043_attack6.png|thumb|400px|attack angle = 6 degrees]]
|}

==Job==
Click on menu "Setup->Create a job". In the "Create/Edit Simulation" dialog, enter 0.2 for the "Courant number" and 10000 for "Total Steps". Then check these "Output variables": Fluid "Mach number", "Pressure coeff", Surface: "Pressure coeff". Click on "OK" to close this dialog.

Save the project.

=Run the simulation=
This simulation can be run on a desktop from a terminal or from the Polaris Viewer. It takes about 2 days using a desktop with 4 cores (i5, 3.0 GHz).

=Analyzing the results=
For airfoils, users are typically interested in the lift and drag. Open the force output file in Polaris Viewer or in a text editor, one can find the drag Fx=79.5 N/m, lift Fy=2881.1 N/m, the air density=1.293 kg/m^3 as reported by the solver, the characteristic velocity=60m/s, characteristic length=1m, one can compute Cd=0.034, Cl=1.235 which match the results in [http://m-selig.ae.illinois.edu/uiuc_lsat/Low-Speed-Airfoil-Data-V3.pdf Summary of Low-Speed Airfoil Data].


In Polaris Viewer, load surface result file and set the view mode to "Wireframe". Load the fluid result file and set the view mode to "Surface" and then pick "Mach number" as the display variable. Go to the last timestep. Zoom in to the airfoil and one can observe this plot.
[[File:Sg6043d_mach.png|400 px]]

One can plot isolines for 2d fluid results. First click on the fluid file in the "Pipeline Browser", then click on menu "Filters->Alphabetical->CellDataToPointData". Hit "Apply" in the "Properties" panel to convert fluid cell data to point data. Then click on the "Contour" button in the toolbar or in the "Filters" menu. Select "Cp" as the "Contour By" variable. Click on "New Range" in the "Properties" panel and set 21 intervals. Hit "Apply" in the "Properties" panel to see the isolines. The isolines initially are white. Users can color them by a variable.

[[File:Sg6043d_Cp_contour.png|400 px]]

To plot the Cp against chord position, first click on the surface result file in the "Pipeline Browser". Then click on menu "Filters->Alphabetical->CellDataToPointData". Hit "Apply" in the "Properties" panel to convert surface cell data to point data. Then click on menu "Filters->Alphabetical->ScatterPlot". Hit "Apply" in the "Properties" panel to convert surface cell data to point data. An x-y chart is shown in the main view. Activate the "Display" panel, set "X Axis Data" to "Use Data Array->Points (0)". In the "Line Series", uncheck all except "Cp". Click on "Cp" there and set "Line Style" to "None" and "Marker Style" to "Cross".

[[File:Sg6043d_scatter_plot.png|thumb|140 px]]

[[File:Sg6043d_Cp_scatter.png|500 px]]

[[Category:Tutorials]]

Installation

2015-10-22T01:53:47Z

Altadyna:

The installation process is composed of two major steps: 1. Installing Alta License Service; 2. Installing Polaris CFD

Both Windows and Linux are supported. However both systems must be 64 bit. Mac OS is not supported at this moment.

On Windows users shall first install "Microsoft Visual C++ 2008 SP1 Redistributable Package (x64)". It can be downloaded from Microsoft directly, or from Alta Dynamics. In some cases users may have already installed it due to prior installation of other software.

=Installing Alta License Service=

The Alta License Service is a software that manages the Polaris CFD software's license usage. It must be running with proper licenses in order for Polaris CFD software to function properly. Alta License Service is relatively small and it does not require much resources to run. It can be installed on a low end computer, or on a computer that runs the actual CFD. A computer running the license service is called the license server.

On Windows, run the installer to install the software. On Linux simply untar the file. Read the PDF manual in the doc folder to configure your license server.

==Testing your license==

Download a free license file from Alta Dynamics. Follow the manual to complete the license server setup. If you obtained another license file from Alta Dynamics you can test it as well.

=Installing Polaris CFD=

==On Windows==
First install MsMpi software that can be download from Alta Dynamics. To avoid version mismatch please do not download this software from Microsoft's website. During the installation process accept the default location for this installation, which is "C:\Program Files\". If it's different you will need to edit the script "bin\polaris_solver.bat" to reflect the correct path for MS MPI, after Polaris CFD is installed.

Run the Polaris CFD software installer as administrator. Follow the prompts to complete the installation. This should be a straight forward process.

==On Linux==
Simply copy the Polaris_*.tar.gz file to your intended installation location, run "tar xzf Polaris_*.tar.gz" to untar the file. You're done.

==Configuring your license server==

Before running the Polaris CFD software, you should have a copy of the "Server certificate" file that was generated by the license server. This certificate file will enable the computer running Polaris CFD to connect the license server. The license server's port number shall be obtained as well.

For the viewer, click on menu "File->Licening", the licensing dialog shows up. Click on "Network", then enter "Server name/ip". Next click on "Server certificate" button to select the file. Enter the port number if it's not 1024.

[[File:Licensing_dialog.png|600px]]

After entering above information, click on "Query". Some text message will be shown. If no error is shown, you're done! Congratulations!

You only need to configure this dialog once on a computer.

For the Polaris CFD solver to communicate with the license server, the same information shall be provided. Edit the file "res/a_config.xml" to enter the same information.

<license_server
name_or_ip = "localhost"
port_number = "1024"
certificate_file = "/opt/share/Lantern/lic_dir/key/server.crt"
/>

=Configuring MPI=
On Linux, Polaris CFD is packed with openmpi. Users do not need to install MPI separately. However in order to run the Polaris CFD solver on a parallel cluster, MPI must be configured properly between all nodes. Please contact your system administrator if you do not know this. You can also contact Alta Dynamics for support.

[[Category:Installation]]

Installation

2015-10-22T01:25:34Z

Altadyna: /* On Linux */

Installation

2015-10-22T01:24:05Z

Altadyna: /* On Windows */

The installation process is composed of two major steps: 1. Installing Alta License Service; 2. Installing Polaris CFD

Both Windows and Linux are supported. However both systems must be 64 bit. Mac OS is not supported at this moment.

On Windows users shall first install "Microsoft Visual C++ 2008 SP1 Redistributable Package (x64)". It can be downloaded from Microsoft directly, or from Alta Dynamics. In some cases users may have already installed it due to prior installation of other software.

=Installing Alta License Service=

The Alta License Service is a software that manages the Polaris CFD software's license usage. It must be running with proper licenses in order for Polaris CFD software to function properly. Alta License Service is relatively small and it does not require much resources to run. It can be installed on a low end computer, or on a computer that runs the actual CFD. A computer running the license service is called the license server.

On Windows, run the installer to install the software. On Linux simply untar the file. Read the PDF manual in the doc folder to configure your license server.

==Testing your license==

Download a free license file from Alta Dynamics. Follow the manual to complete the license server setup. If you obtained another license file from Alta Dynamics you can test it as well.

=Installing Polaris CFD=

==On Windows==
First install MsMpi software that can be download from Alta Dynamics. To avoid version mismatch please do not download this software from Microsoft's website. During the installation process accept the default location for this installation, which is "C:\Program Files\". If it's different you will need to edit the script "bin\polaris_solver.bat" to reflect the correct path for MS MPI, after Polaris CFD is installed.

Run the Polaris CFD software installer as administrator. Follow the prompts to complete the installation. This should be a straight forward process.

==On Linux==

==Configuring your license server==

Before running the Polaris CFD software, you should have a copy of the "Server certificate" file that was generated by the license server. This certificate file will enable the computer running Polaris CFD to connect the license server. The license server's port number shall be obtained as well.

For the viewer, click on menu "File->Licening", the licensing dialog shows up. Click on "Network", then enter "Server name/ip". Next click on "Server certificate" button to select the file. Enter the port number if it's not 1024.

[[File:Licensing_dialog.png|600px]]

After entering above information, click on "Query". Some text message will be shown. If no error is shown, you're done! Congratulations!

You only need to configure this dialog once on a computer.

For the Polaris CFD solver to communicate with the license server, the same information shall be provided. Edit the file "res/a_config.xml" to enter the same information.

<license_server
name_or_ip = "localhost"
port_number = "1024"
certificate_file = "/opt/share/Lantern/lic_dir/key/server.crt"
/>

[[Category:Installation]]

Installation

2015-10-22T01:18:45Z

Altadyna: /* Configuring your license server */

The installation process is composed of two major steps: 1. Installing Alta License Service; 2. Installing Polaris CFD

Both Windows and Linux are supported. However both systems must be 64 bit. Mac OS is not supported at this moment.

On Windows users shall first install "Microsoft Visual C++ 2008 SP1 Redistributable Package (x64)". It can be downloaded from Microsoft directly, or from Alta Dynamics. In some cases users may have already installed it due to prior installation of other software.

=Installing Alta License Service=

The Alta License Service is a software that manages the Polaris CFD software's license usage. It must be running with proper licenses in order for Polaris CFD software to function properly. Alta License Service is relatively small and it does not require much resources to run. It can be installed on a low end computer, or on a computer that runs the actual CFD. A computer running the license service is called the license server.

On Windows, run the installer to install the software. On Linux simply untar the file. Read the PDF manual in the doc folder to configure your license server.

==Testing your license==

Download a free license file from Alta Dynamics. Follow the manual to complete the license server setup. If you obtained another license file from Alta Dynamics you can test it as well.

=Installing Polaris CFD=

==On Windows==

==On Linux==

==Configuring your license server==

Before running the Polaris CFD software, you should have a copy of the "Server certificate" file that was generated by the license server. This certificate file will enable the computer running Polaris CFD to connect the license server. The license server's port number shall be obtained as well.

For the viewer, click on menu "File->Licening", the licensing dialog shows up. Click on "Network", then enter "Server name/ip". Next click on "Server certificate" button to select the file. Enter the port number if it's not 1024.

[[File:Licensing_dialog.png|600px]]

After entering above information, click on "Query". Some text message will be shown. If no error is shown, you're done! Congratulations!

You only need to configure this dialog once on a computer.

For the Polaris CFD solver to communicate with the license server, the same information shall be provided. Edit the file "res/a_config.xml" to enter the same information.

<license_server
name_or_ip = "localhost"
port_number = "1024"
certificate_file = "/opt/share/Lantern/lic_dir/key/server.crt"
/>

[[Category:Installation]]

Installation

2015-10-22T01:18:14Z

Altadyna: /* Configuring your license server */

The installation process is composed of two major steps: 1. Installing Alta License Service; 2. Installing Polaris CFD

Both Windows and Linux are supported. However both systems must be 64 bit. Mac OS is not supported at this moment.

On Windows users shall first install "Microsoft Visual C++ 2008 SP1 Redistributable Package (x64)". It can be downloaded from Microsoft directly, or from Alta Dynamics. In some cases users may have already installed it due to prior installation of other software.

=Installing Alta License Service=

The Alta License Service is a software that manages the Polaris CFD software's license usage. It must be running with proper licenses in order for Polaris CFD software to function properly. Alta License Service is relatively small and it does not require much resources to run. It can be installed on a low end computer, or on a computer that runs the actual CFD. A computer running the license service is called the license server.

On Windows, run the installer to install the software. On Linux simply untar the file. Read the PDF manual in the doc folder to configure your license server.

==Testing your license==

Download a free license file from Alta Dynamics. Follow the manual to complete the license server setup. If you obtained another license file from Alta Dynamics you can test it as well.

=Installing Polaris CFD=

==On Windows==

==On Linux==

==Configuring your license server==

Before running the Polaris CFD software, you should have a copy of the "Server certificate" file that was generated by the license server. This certificate file will enable the computer running Polaris CFD to connect the license server. The license server's port number shall be obtained as well.

For the viewer, click on menu "File->Licening", the licensing dialog shows up. Click on "Network", then enter "Server name/ip". Next click on "Server certificate" button to select the file. Enter the port number if it's not 1024.

[[File:Licensing_dialog.png|500px]]

After entering above information, click on "Query". Some text message will be shown. If no error is shown, you're done! Congratulations!

You only need to configure this dialog once on a computer.

For the Polaris CFD solver to communicate with the license server, the same information shall be provided. Edit the file "res/a_config.xml" to enter the same information.

<license_server
name_or_ip = "localhost"
port_number = "1024"
certificate_file = "/opt/share/Lantern/lic_dir/key/server.crt"
/>

[[Category:Installation]]

File:Licensing dialog.png

2015-10-22T01:09:42Z

Altadyna:

Installation

2015-10-22T01:01:52Z

Altadyna: /* Testing your license */

Installation

2015-10-21T23:34:13Z

Altadyna:

Installation

2015-10-21T22:18:15Z

Altadyna:

Installation

2015-10-21T22:14:23Z

Altadyna:

Installation

2015-10-21T22:05:54Z

Altadyna:

The installation process is composed of two major steps: 1. Installing Alta License Service; 2. Installing Polaris CFD

Both Windows and Linux are supported. However both systems must be 64 bit.

=Installing Alta License Service=

The Alta License Service is a software that manages the Polaris CFD software's license usage. It must be running with proper licenses in order for Polaris CFD software to function properly. Alta License Service is relatively small and it does not require much resources to run. It can be installed on a low end computer, or on a computer that runs the actual CFD.

=Installing Polaris CFD=

[[Category:Installation]]

Installation

2015-10-21T22:00:55Z

Altadyna:

The installation process is composed of two major steps: 1. Installing Alta License Service; 2. Installing Polaris CFD

==Installing Alta License Service==

==Installing Polaris CFD==

[[Category:Installation]]

Category:Installation

2015-10-21T21:59:15Z

Altadyna:

These pages contain all information about installing the Polaris CFD software suite.

Category:Installation

2015-10-21T21:58:02Z

Altadyna:

These pages contain all information about installing the Polaris CFD software suite. The installation process is composed of two steps:
1. Installing Alta License Service
2. Installing Polaris CFD

Category:Installation

2015-10-21T21:56:01Z

Altadyna: Created page with "These pages contain all information about installing the Polaris CFD software."

These pages contain all information about installing the Polaris CFD software.

Installation

2015-10-21T21:54:45Z

Altadyna: Created page with "Installation for Linux and Windows Category:Installation"

Installation for Linux and Windows

[[Category:Installation]]

Main Page

2015-10-21T21:52:56Z

Altadyna: /* General */

= Alta Dynamics Knowledge Center =

Everything you need for running Polaris CFD

<center> Welcome! </center>

All information related to using the Polaris CFD software is categorized as below. Click on the category to find the corresponding pages.

This wiki is being updated constantly. Please send your suggestions and inquiries to info@altadyna.com. If you have a technical question, please email support@altadyna.com. Thank you.

= General =

[[:Category:Installation]]

[[:Category:Viewer]]

= Preprocessing =

Preprocessing refers the process to setup a case for simulation.

[[:Category:Case Setup]]

[[:Category:Geometries]]

[[:Category:Jobs]]

= Postprocessing =

Preprocessing refers the process to analyze the simulation result. One or several operations on the data objects may be performed to obtain particular information, or to gain insight into the data. Users should understand that some of the data operations are applicable to preprocessing to inspect the geometry data objects.

[[:Category:Data operations]]

= Tutorials =

[[:Category:Tutorials]]

Import geometries

2015-08-03T16:40:24Z

Altadyna:

Polaris CFD can import a variety of external geometries that are generated by other software. Here is the list of supported formats:
# Nastran (.nas) mesh format
# STL (.stl) mesh format
# STEP (.stp .step) CAD format
# IGS (.igs .iges) CAD format
# ply mesh format
# off mesh format
# vtk mesh format
# Airfoil profile (.dat) from UIUC Airfoid Database

[[File:Setup import.png|600px]]

When "Check geometry" is checked the imported geometry will go through a quick check for integrity. If a problem is detected it will be reported on a dialog. User shall inspect the geometry, fix the problem and reimport it. Surface normal must point away from the volume. It the imported geometry has wrong normals, user can click on "Flip normal". The transformation matrix on the "Properties" panel is the same as seen at other places.

When a STEP or IGS CAD file is imported, Polaris Viewer will automatically tessellate the surfaces. The meshed surface will be shown in the viewer.

[[Category:Geometries]]

Category:Data operations

2015-07-26T12:59:45Z

Altadyna:

In Polaris Viewer an algorithm to process a data object or geometry object is called a filter. This is the naming convention used in ParaView.

Data operation must be applied on one or several existing data objects (input to a filter). It then produces a new data object in most cases. To use filter, user shall first click on the input data object in the "Pipeline Browser", then choose the appropriate filter to apply. If a filter cannot be applied to the selected data object this filter will be disabled (not applicable).

The output of a filter is another data object which can be used as inputs to subsequent data operations/filters. Sometimes several filters are applied consecutively to get desired results. These filters and the original data objects forms a pipeline of data and operations.

Category:Data operations

2015-07-26T12:57:46Z

Altadyna:

Common Filters

2015-07-26T12:54:43Z

Altadyna:

This page introduces some of the commonly used filters. Click on menu "PostProcessing->Data Analysis" to see a list of such filters. All filters are under the "Filters" menu.

[[Category:Data operations]]

Category:Data operations

2015-07-26T12:53:50Z

Altadyna:

In Polaris Viewer an algorithm to process a data object or geometry object is called a filter. This is the naming convention used in ParaView.

Category:Data operations

2015-07-26T12:53:33Z

Altadyna:

In Polaris Viewer an algorithm to process a data object or geometry object is called a filter. This is the naming convention used in ParaView.

Click on menu "PostProcessing->Data Analysis" to see a list of frequently used filters.

Main Page

2015-07-26T12:52:05Z

Altadyna:

= Alta Dynamics Knowledge Center =

Everything you need for running Polaris CFD

<center> Welcome! </center>

All information related to using the Polaris CFD software is categorized as below. Click on the category to find the corresponding pages.

This wiki is being updated constantly. Please send your suggestions and inquiries to info@altadyna.com. If you have a technical question, please email support@altadyna.com. Thank you.

= General =

[[:Category:Viewer]]

= Preprocessing =

Preprocessing refers the process to setup a case for simulation.

[[:Category:Case Setup]]

[[:Category:Geometries]]

[[:Category:Jobs]]

= Postprocessing =

Preprocessing refers the process to analyze the simulation result. One or several operations on the data objects may be performed to obtain particular information, or to gain insight into the data. Users should understand that some of the data operations are applicable to preprocessing to inspect the geometry data objects.

[[:Category:Data operations]]

= Tutorials =

[[:Category:Tutorials]]

Common Filters

2015-07-26T12:45:37Z

Altadyna:

This page introduces some of the commonly used filters.

[[Category:Data operations]]

Category:Data operations

2015-07-26T12:45:18Z

Altadyna: Created page with "In Polaris Viewer an algorithm to process a data object or geometry object is called a filter. This is naming convention used in ParaView."

In Polaris Viewer an algorithm to process a data object or geometry object is called a filter. This is naming convention used in ParaView.

Common Filters

2015-07-26T12:42:52Z

Altadyna: Created page with "In Polaris Viewer an algorithm to process a data object or geometry object is called a filter. This is naming convention used in ParaView. This page introduces some of the com..."

In Polaris Viewer an algorithm to process a data object or geometry object is called a filter. This is naming convention used in ParaView. This page introduces some of the commonly used filters.

[[Category:Data operations]]

Main Page

2015-07-26T12:40:52Z

Altadyna: /* Postprocessing */

= Alta Dynamics Knowledge Center =

Everything you need for running Polaris CFD

<center> Welcome! </center>

All information related to using the Polaris CFD software is categorized as below. Click on the category to find the corresponding pages.

Please send your suggestions and inquiries to info@altadyna.com. If you have a technical question, please email support@altadyna.com. Thank you.

= General =

[[:Category:Viewer]]

= Preprocessing =

Preprocessing refers the process to setup a case for simulation.

[[:Category:Case Setup]]

[[:Category:Geometries]]

[[:Category:Jobs]]

= Postprocessing =

Preprocessing refers the process to analyze the simulation result. One or several operations on the data objects may be performed to obtain particular information, or to gain insight into the data. Users should understand that some of the data operations are applicable to preprocessing to inspect the geometry data objects.

[[:Category:Data operations]]

= Tutorials =

[[:Category:Tutorials]]

Main Page

2015-07-26T12:36:13Z

Altadyna: /* Postprocessing */

= Alta Dynamics Knowledge Center =

Everything you need for running Polaris CFD

<center> Welcome! </center>

All information related to using the Polaris CFD software is categorized as below. Click on the category to find the corresponding pages.

Please send your suggestions and inquiries to info@altadyna.com. If you have a technical question, please email support@altadyna.com. Thank you.

= General =

[[:Category:Viewer]]

= Preprocessing =

Preprocessing refers the process to setup a case for simulation.

[[:Category:Case Setup]]

[[:Category:Geometries]]

[[:Category:Jobs]]

= Postprocessing =

Preprocessing refers the process to analyze the simulation result. One or several operations on the data objects may be performed to obtain particular information, or to gain insight into the data. Users should understand that some of the data operations are applicable to preprocessing to inspect the geometry data objects.

= Tutorials =

[[:Category:Tutorials]]

Viewing an object

2015-07-26T00:10:50Z

Altadyna:

This page illustrates how to view an object in Polaris Viewer. An object can be a geometry object such as a sphere or an airplane, or a data object such as the fluid flow results. It can also be other objects such as a data table. In this page a geometry object is used to explain some of the major functions in Polaris Viewer.

In Polaris Viewer, click on menu "Setup->Create->Airfoil", then click on "Apply" in the "Properties" panel. An airfoil object is seen below. If the "BC" panel is seen on the right side, one can close it since it is not related to this topic.

[[File:Viewer airfoil 01.png|600px]]

Drag the object in the viewer to rotate it. Then click on the "Information" panel. The "Data Hierarchy" shows this is a "Mulit-block Dataset" and there are four strings under it. Each block in this case is a collection of facets and it is called a face in Polaris. This airfoil has four faces that we will explore later. The "Information" panel also shows the number of cells (facets) and points (vertices) of this object. The X Y Z bounds of the object are also shown.

The "Data Arrays" and "Time" information is empty because this object does not contain such information.

[[File:Viewer airfoil 02.png|600px]]

Next click on the "Display" panel and set the "Representation" style to "Surface With Edges". This can also be set in the toolbar below the main menu (see the mouse pointer in the figure below).

[[File:Viewer airfoil 03.png|600px]]

Users can easily inspect the surface normals by setting the object colored by "cellNormals", and picking a normal component, e.g. Y. The color legend can be toggled to be visible as seen in the figure below.

[[File:Viewer airfoil 04.png|600px]]

Now set the representation style back to "Surface" and the color to "Solid Color". Click on menu "View->Selection Inspector". The "Selection Inspector" panel is shown. Click on "Create Selection" near the top and set the "Selection Type" to "Blocks". The four blocks (faces) are seen in the list of blocks. Click on any of them to see the block/face to be highlighted in the view area.

[[File:Viewer airfoil 05.png|600px]]

[[Category:Viewer]]

Viewing an object

2015-07-25T20:00:52Z

Altadyna:

This page illustrates how to view an object in Polaris Viewer. An object can be a geometry object such as a sphere or an airplane, or a data object such as the fluid flow results. It can also be other objects such as a data table. In this page a geometry object is used to explain some of the major functions in Polaris Viewer.

In Polaris Viewer, click on menu "Setup->Create->Airfoil", then click on "Apply" in the "Properties" panel. An airfoil object is seen. If the "BC" panel is seen on the right side, one can close it since it is not related to this page.

[[File:Viewer airfoil 01.png|600px]]

Drag the object in the viewer to rotate it. Then click on the "Information" panel. The "Data Hierarchy" shows this is a "Mulit-block Dataset" and there are four strings under it. Each block in this case is a collection of facets and it is called a face in Polaris. This airfoil has four faces that we will explore later. The "Information" panel also shows the number of cells (facets) and points (vertices) of this object. The X Y Z bounds of the object are also shown.

The "Data Arrays" and "Time" information is empty because this object does not contain such information.

[[File:Viewer airfoil 02.png|600px]]

Next click on the "Display" panel and set the "Representation" style to "Surface With Edges". This can also be set in the toolbar below the main menu (see the mouse pointer in the figure below).

[[File:Viewer airfoil 03.png|600px]]

Users can easily inspect the surface normals by setting the object colored by "cellNormals", and picking a normal component. The color legend can be toggled to be visible as seen in the figure below.

[[File:Viewer airfoil 04.png|600px]]

Now set the representation style back to "Surface" and the color to "Solid Color". Click on menu "View->Selection Inspector". The "Selection Inspector" panel is shown. Click on "Create Selection" near the top and set the "Selection Type" to "Blocks". The four blocks (faces) are seen in the list of blocks. Click on any of them to see the block/face to be highlighted in the view area.

[[File:Viewer airfoil 05.png|600px]]

[[Category:Viewer]]

File:Viewer airfoil 05.png

2015-07-25T19:57:24Z

Altadyna:

Viewing an object

2015-07-25T19:53:16Z

Altadyna:

This page illustrates how to view an object in Polaris Viewer. An object can be a geometry object such as a sphere or an airplane, or a data object such as the fluid flow results. It can also be other objects such as a data table. In this page a geometry object is used to explain some of the major functions in Polaris Viewer.

In Polaris Viewer, click on menu "Setup->Create->Airfoil", then click on "Apply" in the "Properties" panel. An airfoil object is seen. If the "BC" panel is seen on the right side, one can close it since it is not related to this page.

[[File:Viewer airfoil 01.png|600px]]

Drag the object in the viewer to rotate it. Then click on the "Information" panel. The "Data Hierarchy" shows this is a "Mulit-block Dataset" and there are four strings under it. Each block in this case is a collection of facets and it is called a face in Polaris. This airfoil has four faces that we will explore later. The "Information" panel also shows the number of cells (facets) and points (vertices) of this object. The X Y Z bounds of the object are also shown.

The "Data Arrays" and "Time" information is empty because this object does not contain such information.

[[File:Viewer airfoil 02.png|600px]]

Next click on the "Display" panel and set the "Representation" style to "Surface With Edges". This can also be set in the toolbar below the main menu (see the mouse pointer in the figure below).

[[File:Viewer airfoil 03.png|600px]]

Users can easily inspect the surface normals by setting the object colored by "cellNormals", and picking a normal component. The color legend can be toggled to be visible as seen in the figure below.

[[File:Viewer airfoil 04.png|600px]]

[[Category:Viewer]]

File:Viewer airfoil 01.png

2015-07-25T19:43:26Z

Altadyna: Altadyna uploaded a new version of File:Viewer airfoil 01.png

File:Viewer airfoil 02.png

2015-07-25T19:42:51Z

Altadyna: Altadyna uploaded a new version of File:Viewer airfoil 02.png

File:Viewer airfoil 03.png

2015-07-25T19:42:33Z

Altadyna: Altadyna uploaded a new version of File:Viewer airfoil 03.png

File:Viewer airfoil 04.png

2015-07-25T19:41:53Z

Altadyna: Altadyna uploaded a new version of File:Viewer airfoil 04.png

Viewing an object

2015-07-25T19:38:03Z

Altadyna:

File:Viewer airfoil 04.png

2015-07-25T19:36:26Z

Altadyna:

File:Viewer airfoil 03.png

2015-07-25T19:36:14Z

Altadyna:

File:Viewer airfoil 02.png

2015-07-25T19:36:01Z

Altadyna:

File:Viewer airfoil 01.png

2015-07-25T19:35:43Z

Altadyna:

Viewing an object

2015-07-25T19:35:17Z

Altadyna:

Viewing an object

2015-07-25T19:28:19Z

Altadyna:

Viewing an object

2015-07-25T19:18:06Z

Altadyna: Created page with " Category:Viewer"

[[Category:Viewer]]

Geometry Usage

2015-07-25T18:35:19Z

Altadyna: Altadyna moved page Geometry BC to Geometry Usage

A geometry is not used if no usage (boundary condition, initial condition, VR) is assigned to it, even though it is shown in the viewer. When applying boundary conditions it makes no difference if the geometry is created internally or imported from different formats.

Saving a project will bring up the "BC" panel. User can also manually display/hide this panel. The "BC" panel is dockable. It is placed at the right side of the main window in the figure below.

[[File:Setup bc panel.png|600px]]

By default a geometry is not used. User can click on "Fluid", "Solid" or "Measurement" to use the region for that purpose. If a geometry is "Fluid", a fluid material and initial condition must be assigned. Same requirement will apply to solid regions when solid/fluid coupling analysis is enabled.

If a geometry is "Solid" the wall type must be specified as either "Regular" or "Frictionless". A face boundary condition can be assigned to the entire geometry. If the geometry is moving or rotating, "Moving" must be check and one of the defined motions must be selected. Inverted solid refers to a solid that inverts its fluid and solid volumes. This means inside the solid is fluid and outside is solid. This can be used for internal flow simulations such as nozzles.

The "VR" checkbox can be used for any geometries. If a VR level is assigned to a solid geometry/region, only the voxels intersecting its surface will be refined to the designated refinement level. For other regions all voxels contained inside the region will be flagged for refinement.

On the bottom of the "BC" panel is a table listing the faces of the geometry. A face is a collection of facets, usually connected facets. One or several faces form a enclosed geometry. All faces will inherit the boundary conditions defined on the region. However each face can have its own boundary conditions. Double click the face in the table and a dialog will pop up for assigning/modifying face usage.

[[File:Setup face bc.png|500px]]

[[Category:Geometries]]

Geometry BC

2015-07-25T18:35:19Z

Altadyna: Altadyna moved page Geometry BC to Geometry Usage

#REDIRECT [[Geometry Usage]]

Geometry Usage

2015-07-25T15:02:53Z

Altadyna:

File:Setup face bc.png

2015-07-25T15:02:09Z

Altadyna: