TryItNow! Step by Step Walkthrough: Spoiler Support
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1 TryItNow! Step by Step Walkthrough: Spoiler Support ANSYS, Inc. March 28, 2016
2 TryItNow! Step by Step Walkthrough: Spoiler Support ANSYS designed this TryItNow! experience to give you quick access to ANSYS AIM simulations on the cloud. This AIM demonstration shows the air flow over an automotive rear spoiler and the resulting stresses in the spoiler support. The simulation demonstrates the ease of setting up and solving a multiphysics simulation. This geometry has been processed in SpaceClaim to use half the symmetric part and add a fluid flow enclosure around the structure ANSYS, Inc. March 28, 2016 Ready to learn more about ANSYS AIM? CONTACT US
3 Select Fluid-Structure Interaction Template Select the Fluid-Structure Interaction Template from the Study menu in AIM ANSYS, Inc. March 28, 2016
4 Modify Template Settings 1. Turn off structural contact detection. This is more efficient when there is only one structural part. 2. Turn on configuration to more easily work with separate solid and fluid parts. 3. Select Create Simulation Process and select the geometry file spoiler.scdoc to execute the template ANSYS, Inc. March 28, 2016
5 Task Based Workflow The necessary simulation tasks are created, and the geometry loaded ANSYS, Inc. March 28, 2016
6 Suppress the solid part in the Flow simulation 2. Selection filters enable you to switch between selecting points, lines, surfaces or bodies. Turn on the Body selection filter. 3. Left-click to select the spoiler body. 1. Select the Configuration task for the Flow simulation. 4. Right-click and add a Suppress Control to the body. 5. Right-click and update the configuration ANSYS, Inc. March 28, 2016
7 Specify Mesh Inflation 3. Use Automatically Defined to select all unlabeled surfaces 2. Right-click and use the Fix menu to navigate to Inflation 1 1. Select the Mesh task ANSYS, Inc. March 28, 2016
8 Generate and Review Mesh Right-click to Generate Mesh and review the result ANSYS, Inc. March 28, 2016
9 The Physics Panel Select the Flow Task and review the physics panel. The initial settings are automated based on the selected template. In each section you can review the setup and modify it based on your own requirements. The material assignments, physics options and solver options can all be reviewed ANSYS, Inc. March 28, 2016
10 Specify Inlet conditions 3. Right-click and Add an Inlet Boundary Condition. 2. Select the Inlet face. 1. Activate the Face selection filter. 4. Specify inlet velocity of 80 mile/hr (36 m/s) ANSYS, Inc. March 28, 2016
11 Specify Outlet Boundary 1. Select the Outlet face. 2. Right-click and Add an Outlet Boundary Condition. 3. Specify the outlet Pressure as 0 Pa ANSYS, Inc. March 28, 2016
12 Specify Far Field Boundary 1. Using Ctrl-left click, select the two far field faces. 2. Right-click and Add an Opening boundary condition. 3. Specify an entrainment pressure of 0 Pa ANSYS, Inc. March 28, 2016
13 Specify Symmetry Boundary 1. Select the Symmetry face. 2. Right-click and Add a Symmetry boundary condition ANSYS, Inc. March 28, 2016
14 Specify Wall Boundary Right-click and a add Wall boundary condition. (AIM will automatically select all surfaces without a boundary condition specification for the wall.) ANSYS, Inc. March 28, 2016
15 Optional, Increase number of Solver processes From the Flow physics panel, navigate to Solver Options/Solver Settings/Launch Controls, and set the number of processes. Hit Apply when done. AIM always runs in parallel, using 2 processes by default. You can accelerate solution time by increasing the number of processes (to a maximum of 6 for Try It Now) ANSYS, Inc. March 28, 2016
16 Update Flow solution Right-click on the Flow task and select Update to execute solution. The Solution Quality tab can be used to monitor convergence. This case defaults to moderate convergence sufficient for demonstration purposes ANSYS, Inc. March 28, 2016
17 Visualize Pressure Field 2. Right-click and add a Contour Result. 3. Select the Wall from the Location dropdown, and Pressure for the Variable. 4. Right-click and evaluate the Result. 1. Select the Results task for the Flow simulation ANSYS, Inc. March 28, 2016
18 Suppress the flow volume in the Structural simulation 3. Left-click to select the flow volume body. 2. Turn on the Body selection filter. 1. Select the Configuration task for the Structural simulation. 4. Right-click and add a Suppress Control to the body. 5. Right-click and update the configuration ANSYS, Inc. March 28, 2016
19 Specify Structural Support 3. Select the support bottom face. 1. Ensure the Face selection filter is active. 4. Right-click and add a Support Boundary Condition 2. Select the Structural Task ANSYS, Inc. March 28, 2016
20 Specify symmetry displacement condition 1. Select the spoiler mid face. 2. Right-click and add a Displacement Boundary Condition 3. Change the definition to Normal to boundary, and set a 0 displacement ANSYS, Inc. March 28, 2016
21 Specify surfaces for flow pressure load 3. Hit the + button to add the selection as the target of the pressure load. 2. Using Shift-Left Mouse, box select all the structural faces. 1. Select the Physics Coupling object from the Fix menu ANSYS, Inc. March 28, 2016
22 Update Results (and Structural solution) Right-click the Structural Results task, and select Update to generate the mesh, execute the solution, and calculate results ANSYS, Inc. March 28, 2016
23 Post-process Equivalent Stress Results 1. Select the Results task, and use the Search and Select bar to pick the Equivalent Stress Result. 2. Right-click to animate the results ANSYS, Inc. March 28, 2016
24 TryItNow! Step by Step Walkthrough: Spoiler Support Ready to learn more about ANSYS AIM? CONTACT US ANSYS, Inc. March 28, 2016
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