Thank you for reminding me the rule. I understand that. I redid this case, and took screenshots for each step as below:
1. SolidWorks 2D file. It's saved as ".SLDPRT" format.
Dimension: 0.5 mm*10 mm.
Unit system: MMGS.
2. Drag Fluid Flow (Fluent) to the Workbench project space.
3. Import the SolidWorks file into Ansys. See screenshot below.
- I opened the geometry in Ansys DesignModeler.
- Right Click Import1, and click Generate.
- Units make sense. No problem observed.
4. Mesh. See screenshot below. (Mesh should not be a problem since I'm using laminar flow as an example here. )
5. Setup. 2D with double precision.
After I opened the Fluent solved, I got the following warning message. (This is not a problem since when I click "Axisymmetric", this error will be gone)
- Warning: The use of axis boundary conditions is not appropriate for a 2D/3D flow problem. Please consider changing the zone type to symmetry or wall, or the problem to axisymmetric.
Then under General, I click Check, and below are the messages in Console:
Then I click Report Quality and get the following:
- Mesh Quality:
- Minimum Orthogonal Quality = 1.00000e+00 cell 2000 on zone 4 (ID: 2001 on partition: 0) at location ( 4.97354e-04 9.95000e-03)
- (To improve Orthogonal quality , use "Inverse Orthogonal Quality" in Fluent Meshing,
- where Inverse Orthogonal Quality = 1 - Orthogonal Quality)
- Maximum Aspect Ratio = 1.89227e+01 cell 2002 on zone 4 (ID: 2003 on partition: 0) at location ( 4.97354e-04 9.85000e-03)
Then I clicked "Axisymmetric" since I want to simulate the pipe flow.
6.Laminar flow model. (air velocity 1m/s, Re<100)
I didn't change anything in Materials and CellZone. I'm using air as fluid by default.
7. Boundary condition.
inlet: velocity-inlet. I set 1 m/s. Re is about 50
8. I didn't change anything in Methods. Everything is default.
After I click Initialize, I got the following error message. (It's weird because I don't have this problem if I create the geometry in Ansys DesignModeler)
10. If I try Standard Initialization as below, nothing pops up when I click Initialize. Then I can run the calculation without problem. It converges pretty quickly. (Tolerance is set to 1e-6)
11. However, after I open CFD-post, the geometry changed! I've no idea what happened here.