CFD Online Discussion Forums

CFD Online Discussion Forums (http://www.cfd-online.com/Forums/)
-   ANSYS Meshing & Geometry (http://www.cfd-online.com/Forums/ansys-meshing/)
-   -   [ICEM] applying inflation in vertical direction (http://www.cfd-online.com/Forums/ansys-meshing/84570-applying-inflation-vertical-direction.html)

MASOUD February 2, 2011 17:55

applying inflation in vertical direction
 
3 Attachment(s)
Hi,

For a 2D rectangular geometry with X=5 and Y=1, I'd like to divide it to 50 in X-direction and 10 in Y-direction with inflation just in Y-direction in order to get a mesh similar to the attached file.

I've tried patch-dep, patch-indep and autoblock surface meshers but got undesired meshes which are shown in attached figures.

What i did, Just specified max size in 'curve mesh setup' and 'surface mesh setup' and computed the mesh.

Please let me know how to get the required mesh.

Thanks

BrolY February 3, 2011 04:39

You should try blocking. It would be very easy with your geometry !

PSYMN February 3, 2011 12:33

Right, blocking would be easy and give 100% control. Try a single hexa tutorial (such as the 2D pipe junction) and you will be all set.

but if you want to use patch conforming, you could also increase the Mapping in your global settings, or at least turn off the transition to the larger mesh size on your surface... In other words, the patch dependent mesher can map this easily, but your settings are not asking it to. Go to Mesh (tab) => Global settings and turn off the transition and turn on mapping... Or if you want transition on other areas of your model, just set the mesh size on this surface to match the curves...

Patch independent could even give you boundary layers if that is what you want, just set the intial height and width (number of layers) on those perimeter curves. Or you could use prism with the blayer2D option (under advanced settings).



Best regards,

MASOUD February 3, 2011 14:54

1 Attachment(s)
Well, I will go through your suggestions but for now, please check the following procedure which resulted in having the attached mesh.

1. In 'global mesh setup' > 'shell meshing parameters' , chose patch-dependent.
2. In 'curve mesh setup' set 30 nodes for lower and upper curves.
3. In 'curve mesh setup', set 20 nodes for left and right curves and in 'advanced bunching', set 0.01 for spacing 1-2 and 1.2 for ratio 1-2.

4. Finally hit the compute mesh.

Please check the attached file and let me know whether or not this is a right procedure.

Thanks

PSYMN February 3, 2011 18:51

Does this meet your needs?
 
Yup, that is one way to do it... The real question is if you like it ;)

ICEM CFD is very flexible and their are many ways to get things done. Hexa blocking offers the most control, but if this meets your needs, then you are already done.

Best regards,

Simon

MASOUD February 4, 2011 12:53

Quote:

Originally Posted by PSYMN (Post 293548)
Yup, that is one way to do it... The real question is if you like it ;)

ICEM CFD is very flexible and their are many ways to get things done. Hexa blocking offers the most control, but if this meets your needs, then you are already done.

Best regards,

Simon

Thanks Simon, I'll try it too. Cheers.


All times are GMT -4. The time now is 12:32.