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-   -   Importing 2D separated Hybrid mesh from PointWise to Ansys Fluent (http://www.cfd-online.com/Forums/pointwise/132244-importing-2d-separated-hybrid-mesh-pointwise-ansys-fluent.html)

Masoud.A1 March 27, 2014 10:25

Importing 2D separated Hybrid mesh from PointWise to Ansys Fluent
 
Hi! I'm new in CFD Online, so I hope I post my message correctly.
I see you've made your mesh in "PointWise". I also work on simulation of a 2-element airfoil and I chose PointWise for meshing.
I try to create 10-20 steps extrusion around each airfoil (structured mesh) and for the rest of the domain I use triangular mesh (unstructured) so in total I have 3 separated domain. In PointWise it seems it's impossible to join structured to unstructured domains. Now my question is how you imported your hybrid mesh into Fluent?
Thanks in advance for your replay
Masoud

taxalian March 29, 2014 03:38

Quote:

Originally Posted by Masoud.A1 (Post 482461)
Hi Sijal! I'm new in CFD Online, so I hope I post my message correctly.
I see you've made your mesh in "PointWise". I also work on simulation of a 2-element airfoil and I chose PointWise for meshing.
I try to create 10-20 steps extrusion around each airfoil (structured mesh) and for the rest of the domain I use triangular mesh (unstructured) so in total I have 3 separated domain. In PointWise it seems it's impossible to join structured to unstructured domains. Now my question is how you imported your hybrid mesh into Fluent?
Thanks in advance for your replay
Masoud

Hi Masoud,
Just make sure you make the grid in XY plane and they should be right handed pointing in the +Z direction. Obviously you can't join structured and unstructured grids. In Pointwise just select the domains in the tree and then export you grid.
For further details refer to this thread:
http://www.cfd-online.com/Forums/poi...t-problem.html

Masoud.A1 March 29, 2014 04:55

Thanks so much for the reply. You're definitely right. It follows the Right-Hand-Rule of "I-J-K" vectors. You should select all the structured domains that you want to check, then go to EDIT> ORIENT. Here you select each domain separately and observe the Red (I) & Yellow (J) arrows, and use the Right-Hand-Rule. If you don't get the " +K " vector, then reverse the direction of "I" or "J" (there's no difference).
Another point is that for exporting to FLUENT, in addition to set the "boundary conditions" you have to go to: CAE>SET VOLUME CONDITIONS> NEW & select all the domains (both structured and unstructured in 2D) and call it for instance "DOMAIN-1" and select the type as FLUID. You should do it only if you have one type of fluid, if not, create different volume conditions for each domain.

pdp.aero April 6, 2014 06:52

You can join the structured and unstructured block. What you need is defining an interface between them. Consequently using grid interface in fluent as well.


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