vk.com/club152685050 | vk.com/id446425943

Steady-State Case Setup

12.6.6. Reference Values

Physics → Solver → Reference Values...

1.Select pressure-inlet from the Compute from drop-down list.

2.Select fluid-background from the Reference Zone drop-down list.

3.Retain the default Reference Values as shown above.

12.6.7. Solution

In this section you will specify solution methods and controls that are appropriate for this overset meshing case.

1.Set the solution methods.

Solution → Solution → Methods...

Release 2019 R1 - © ANSYS,Inc.All rights reserved.- Contains proprietary and confidential information
of ANSYS, Inc. and its subsidiaries and affiliates.	419

vk.com/club152685050Using Overset and Dynamic| vkMeshes.com/id446425943

In the Solution Methods task page, retain the default selections for the Scheme and Spatial Discretization.

2.Set the solution controls.

Solution → Solution → Controls...

	Release 2019 R1 - © ANSYS,Inc.All rights reserved.- Contains proprietary and confidential information
420	of ANSYS, Inc. and its subsidiaries and affiliates.

vk.com/club152685050 | vk.com/id446425943

Steady-State Case Setup

a.Review and retain the default settings.

b.Click Limits… to open the Solution Limits dialog box.

c.Enter 1e+07 for Maximum Turb. Viscosity Ratio.

d.Click OK to accept the settings.

3.Define a report for the drag coefficient of the pod.

Solution → Reports → Definitions → New → Force Report → Drag...

Release 2019 R1 - © ANSYS,Inc.All rights reserved.- Contains proprietary and confidential information
of ANSYS, Inc. and its subsidiaries and affiliates.	421

vk.com/club152685050Using Overset and Dynamic| vkMeshes.com/id446425943

a.Enable Report File and Report Plot in the Create group box.

b.Select wall-pod from the Wall Zones list.

c.Click OK to create the report.

For additional information on writing report files, refer to "Creating Report Files" in the Fluent User's Guide.

4.Specify the residual monitor criterion for the solution equations.

Solution → Reports → Residuals...

	Release 2019 R1 - © ANSYS,Inc.All rights reserved.- Contains proprietary and confidential information
422	of ANSYS, Inc. and its subsidiaries and affiliates.

vk.com/club152685050 | vk.com/id446425943

Steady-State Case Setup

Enter 1e-06 as the Absolute Criterion for all of the Equations and then close the Residual Monitors dialog box.

5.Ensure Hybrid is selected as the initialization method in the Solution ribbon tab. Click Initialize.

6.Define parameters for calculation to a steady-state solution.

Solution → Run Calculation → Calculate...

a. Enter 1000 for No. of Iterations.

Note

If you are running in serial, then you must reorder the mesh prior to beginning the calculation, using the mesh/reorder/reorder-domain text command. This reordering is done automatically for parallel processes > 1.

b.Click Calculate.

Release 2019 R1 - © ANSYS,Inc.All rights reserved.- Contains proprietary and confidential information
of ANSYS, Inc. and its subsidiaries and affiliates.	423

vk.com/club152685050Using Overset and Dynamic| vkMeshes.com/id446425943

7.Check the mass imbalance for the inlet and outlet to confirm there is not a large difference.

Results → Reports → Fluxes...

a.Select pressure-inlet and pressure-outlet from the list of Boundaries.

b.Click Compute.

8.Save the steady-state case and data files overset-pod-steady-state.cas/dat.gz..

File → Write → Case & Data...

	Release 2019 R1 - © ANSYS,Inc.All rights reserved.- Contains proprietary and confidential information
424	of ANSYS, Inc. and its subsidiaries and affiliates.