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Figure 17.4: Mesh Display of the Nozzle Mirrored and Upright

ii. Close the Camera Parameters dialog box.

e.Close the Views dialog box.

17.4.3. General Settings

1.Check the mesh.

Domain → Mesh → Check → Perform Mesh Check

ANSYS Fluent will perform various checks on the mesh and report the progress in the console. Make sure that the reported minimum volume is a positive number.

2.Scale the mesh.

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Setup and Solution

Domain → Mesh → Scale...

a.Select Specify Scaling Factors from the Scaling group box.

b.Enter 1e-6 for X and Y in the Scaling Factors group box.

c.Click Scale and close the Scale Mesh dialog box.

3.a. Right click in the graphics window and select Refresh Display

b.Click the Fit to Window icon, , to center the graphic in the window.

4.Check the mesh.

Domain → Mesh → Check → Perform Mesh Check

Note

It is a good idea to check the mesh after you manipulate it (that is, scale, convert to polyhedra, merge, separate, fuse, add zones, or smooth and swap.) This will ensure that the quality of the mesh has not been compromised.

5.Define the units for the mesh.

Domain → Mesh → Units...

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a.Select length from the Quantities list.

b.Select mm from the Units list.

c.Select surface-tension from the Quantities list.

d.Select dyn/cm from the Units list.

e.Close the Set Units dialog box.

6.Retain the default setting of Pressure-Based in the Solver group box of the Physics ribbon tab.

Physics → Solver

7.Select Transient from the Time list.

8.Select Axisymmetric from the drop-down list in the Solver group box.

17.4.4. Models

1.Enable the Volume of Fluid multiphase model.

Physics → Models → Multiphase...

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Setup and Solution

a.Select Volume of Fluid from the Model list.

The Multiphase Model dialog box expands to show related inputs.

b.Retain the default settings and click OK to close the Multiphase Model dialog box.

17.4.5. Materials

The default properties of air and water defined in ANSYS Fluent are suitable for this problem. In this step, you will make sure that both materials are available for selection in later steps.

1.Add water to the list of fluid materials by copying it from the ANSYS Fluent materials database.

Physics → Materials → Create/Edit...

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a.Click Fluent Database... in the Create/Edit Materials dialog box to open the Fluent Database Materials dialog box.

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