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-   -   Noone here to help?? (http://www.cfd-online.com/Forums/ansys/75847-noone-here-help.html)

hpcan May 6, 2010 22:26

Noone here to help??
 
1 Attachment(s)
I have sent this question before and apparently noone either knew what to do or didn't care...It should be simple to the one who is using ANSYS preproc. meshing features..
I have a circular cut out in my rectangular region model and I want to create a mapped mesh as you may see in the figure attached! I can also send the geometry of my model.. Simply meshing a circular pipe region with isoparametric QUADs..
Please let me know at hpcan@yahoo.com if you know how to create this mesh...Thanks

Can

Josh May 7, 2010 15:18

This looks like a structured O-grid mesh. The ANSYS mesh program can only do unstructured meshes. You'll need ICEM for this. Do the square-circle tutorial in ICEM found on the ANSYS portal.

Also, the reason people didn't respond is likely because you are asking how to make a mesh from scratch. This is a time-consuming operation. Nobody is here to do your work for you, and nobody is going to tell you step-by-step how to do a task like this. Read the posting guidelines here: http://www.cfd-online.com/Forums/cfx...ease-read.html

Do the tutorials. Play with the software. Read the documentation. If you're still having problems with something specific, post that.

hpcan May 7, 2010 22:37

thx
 
Hi Josh,

Thank you for your reply. I guess my post was a little rude but I was very frustrated. I actually meant a reply like yours. In fact in my previous post, I asked about how I can approach making a mesh like this and did not of course expect anyone to do my job for me. I am new here and do not have much idea about what programs can handle what type of meshing.
Is this "square-circle tutorial in ICEM found on the ANSYS portal" tutorial the one that I can access when I login to Ansys Customer Portal? I filled out a form to login and waiting for authorization. This is what you are talking about right?
Thank you

Can

Josh May 8, 2010 14:33

My mistake. It's difficult to perceive somebody's attitude through reading.

Welcome to the site. I joined last year when I was doing a summer studentship. I guess this site helped quite a bit because I am now doing a masters.

Yes, that tutorial is on the portal under ICEM Meshing. I don't recall the full name, but it's a half-sphere with a cube cut out of it. They mesh it with a structured hexahedral O-grid mesh.

newdate4 May 12, 2010 02:08

Quote:

Originally Posted by hpcan (Post 257868)
I have sent this question before and apparently noone either knew what to do or didn't care...It should be simple to the one who is using ANSYS preproc. meshing features..
I have a circular cut out in my rectangular region model and I want to create a mapped mesh as you may see in the figure attached! I can also send the geometry of my model.. Simply meshing a circular pipe region with isoparametric QUADs..
Please let me know at hpcan@yahoo.com if you know how to create this mesh...Thanks

Can

It isnt easy to get a structured mesh in ansys-Pre....usually for such user controlled mesh generation use advanced mesh softwares like Hypermesh/Ansa in which you can easily set the size/biasing & get it done in few minutes..
if Ansys is your only option then u have to manually(painful) create a quarter model in & use reflect command to get the full mesh model..good luck..


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