Step 9: Calculating a New Solution in ANSYS FLUENT

Now that there is an updated computational mesh for the modified geometry in the duplicated system, a new solution needs to be generated using ANSYS FLUENT. In this step, you will revisit the settings within ANSYS FLUENT, calculate another solution, then view the new results.

1.   Open ANSYS FLUENT.

In the Project Schematic, right-click on the Setup cell of the new-elbow system (cell B4) and select Edit... from the context menu. Since the mesh has been changed, you are prompted as to whether you want to load the new mesh into ANSYS FLUENT or not. Select Yes to continue, and click OK when FLUENT Launcher is displayed in order to open ANSYS FLUENT.

Figure 1.35: ANSYS Workbench Prompt When the Upstream Mesh Has Changed

2.   Make sure that the unit of length is set to inches.

General Units...

3.   Check the mesh (optional).

General Check

4.   Revisit the boundary conditions for the small inlet.

Boundary Conditions velocity-inlet-small Edit...

Here, you need to set the hydraulic diameter to 1.5 in based on the new dimensions of the small inlet.

5.   Reinitialize the solution.

Solution Initialization

Again, use the velocity-inlet-large boundary condition to initialize the solution, adding the Y Velocity component of 1.2 as you did before.

6.   Recalculate the solution.

Run Calculation

  Keep the Number of Iterations set to 250. This time, the solution converges after approximately 220 iterations.

7.   Close ANSYS FLUENT.

8.   Revisit the results of the calculations in ANSYS CFD-Post.

   Double-click the Results cell of the new-elbow fluid flow system to re-open ANSYS CFD-Post where you can review the results of the new solution.

9.   Close ANSYS CFD-Post.

10.   Save the elbow-workbench project in ANSYS Workbench.

11.   View the files generated by ANSYS Workbench.

View $\rightarrow$ Files

Figure 1.36: ANSYS Workbench Displaying the Files View for the Project After Viewing the New Results in ANSYS CFD-Post

Note the addition of the solution and state files now associated with new duplicated system.