[EleGiova]

Hello,

I am creating a 3D hybrid mesh of a Propeller with Pointwise (18.4 R3) and then I will use Ansys FLUENT (20 R1) as solver.
I am having problems with non-orthogonality, in particular with the communication between the 2 software.

In my mesh I currently have a maximum non-orthogonality of 63 (since in Pointwise the scale is 0-100), but when I import the grid in FLUENT and perform a mesh check quality I have a minimum non-ortho of 0.04, which isn't acceptable.

What is the maximum value of non-orthogonality in PW which corresponds to 0,15 in FLUENT (=minimum acceptable value in FLUENT)?

Thank you,
E.G

[pdp.aero]

Originally Posted by EleGiova

Hello,

I am creating a 3D hybrid mesh of a Propeller with Pointwise (18.4 R3) and then I will use Ansys FLUENT (20 R1) as solver.
I am having problems with non-orthogonality, in particular with the communication between the 2 software.

In my mesh I currently have a maximum non-orthogonality of 63 (since in Pointwise the scale is 0-100), but when I import the grid in FLUENT and perform a mesh check quality I have a minimum non-ortho of 0.04, which isn't acceptable.

What is the maximum value of non-orthogonality in PW which corresponds to 0,15 in FLUENT (=minimum acceptable value in FLUENT)?

Thank you,
E.G

I dunno the answer but I were you I would create a a very simple two mesh for which I know the non-orthogonality value in PW and then import the mesh in FL and see the corresponding value there.

[EleGiova]

Yes I have already done that.
I have discovered that the value for skewness is the same for both Pointwise and Ansys Fluent, so it has to be less than 0.8 etc.
While the value for orthogonality that we have in Pointwise is the same we have on OpenFOAM, so it has to be less than 65.
I have imported a cube with a perfect cartesian mesh and its orthogonal quality in Pointwise was 0, so I suppose the lower the better.
For my mesh I was able to have orthogonality lower than 50 in Pointwise, but Fluent didn't like it anyway, so at this point I don't know what is the real link.

This was my "research", end of the story: I changed the mesh generator.

[pdp.aero]

Originally Posted by EleGiova

Yes I have already done that.
I have discovered that the value for skewness is the same for both Pointwise and Ansys Fluent, so it has to be less than 0.8 etc.
While the value for orthogonality that we have in Pointwise is the same we have on OpenFOAM, so it has to be less than 65.
I have imported a cube with a perfect cartesian mesh and its orthogonal quality in Pointwise was 0, so I suppose the lower the better.
For my mesh I was able to have orthogonality lower than 50 in Pointwise, but Fluent didn't like it anyway, so at this point I don't know what is the real link.

This was my "research", end of the story: I changed the mesh generator.

I have no idea what is your case, how you have generated the mesh, what kinda mesh you generated and what is your physics but I am sure if you contact their customer services and explain your problem with the mesh when you import it in FL, they would sincerely help you. Good luck!