CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > ANSYS Meshing & Geometry

[ANSYS Meshing] CFX- mesh in ANSYS 13

Register Blogs Members List Search Today's Posts Mark Forums Read

Like Tree2Likes
  • 2 Post By tetraedro

Reply
 
LinkBack Thread Tools Display Modes
Old   January 11, 2011, 05:50
Default CFX- mesh in ANSYS 13
  #1
New Member
 
Join Date: Jan 2011
Posts: 5
Rep Power: 6
tetraedro is on a distinguished road
Hi guys!
Someone knows if CFX-mesh is still available in ANSYS 13.0? in the version that I have installed there isn't neither in method (as you can see in the picture attached), neither in the algorithmes of the tetra method...

help me please!
Attached Images
File Type: jpg 1.jpg (52.0 KB, 167 views)
amin_gls and Roza like this.
tetraedro is offline   Reply With Quote

Old   January 11, 2011, 11:21
Default
  #2
siw
Senior Member
 
Join Date: Jul 2009
Posts: 444
Rep Power: 14
siw will become famous soon enough
It's gone in version 13. In version 12.1 a message appeared saying that it's recommeded to use patch conforming tetra as CFX-Mesh will be going in the future.
siw is offline   Reply With Quote

Old   January 12, 2011, 03:47
Default
  #3
New Member
 
Join Date: Jan 2011
Posts: 5
Rep Power: 6
tetraedro is on a distinguished road
but I saw that CFX-mesh is still available in that brochure:

http://www.ansys.com/assets/brochure...g-brochure.pdf

how is it possible?
tetraedro is offline   Reply With Quote

Old   January 12, 2011, 17:09
Default Marketing
  #4
Senior Member
 
PSYMN's Avatar
 
Simon Pereira
Join Date: Mar 2009
Location: Ann Arbor, MI
Posts: 2,662
Blog Entries: 1
Rep Power: 35
PSYMN has a spectacular aura aboutPSYMN has a spectacular aura about
SIW is right, 12.1 was the last version to include CFX Mesh, and even then it was not the recommended method. ANSYS Development (and the smart folks at GE who helped develop that mesher) concluded that the newer Tetra methods superseded it in speed, memory efficiency, robustness, control and even smoothness (which was its main advantage). At my last (unofficial) check (during 12.1), the Patch conforming method was 6 times faster for the same number of elements.

The fact that it remained in the brochure was just a marketing mistake . I have informed ANSYS Marketing and expect they will fix it as soon as possible.
PSYMN is offline   Reply With Quote

Old   January 13, 2011, 03:07
Default
  #5
siw
Senior Member
 
Join Date: Jul 2009
Posts: 444
Rep Power: 14
siw will become famous soon enough
I'd wished they had kept the CFX-Mesh Line/Point/Trangular Control though.

I don't like having to make the Body Of Influences in DesignModeller, espacially since I always use Solid Edge for my geometries. I think all these mesh related (not CAD related) features should be at the mesh generation stage, but they'll never return.
siw is offline   Reply With Quote

Old   January 13, 2011, 03:21
Default
  #6
New Member
 
Join Date: Jan 2011
Posts: 5
Rep Power: 6
tetraedro is on a distinguished road
ok!
but now I have another question: in CFX-mesh I could create some 2D-regions (for example, inlet, outlet, body etc...), and in CFX-pre I could define some boundary conditions on those regions.
And now? How can I proceed in ANSYS meshing?
Unfortunately I didn't find a tutorial that explain a procedure to create it in ANSYS 13.

thanks!
tetraedro is offline   Reply With Quote

Old   January 13, 2011, 07:50
Default
  #7
siw
Senior Member
 
Join Date: Jul 2009
Posts: 444
Rep Power: 14
siw will become famous soon enough
Instead you need to use Named Selections.

PSYMN made a video about that recently and it's linked in a post somewhere here.
siw is offline   Reply With Quote

Old   January 13, 2011, 14:34
Default
  #8
Senior Member
 
PSYMN's Avatar
 
Simon Pereira
Join Date: Mar 2009
Location: Ann Arbor, MI
Posts: 2,662
Blog Entries: 1
Rep Power: 35
PSYMN has a spectacular aura aboutPSYMN has a spectacular aura about
Yes, I did make a short movie about this late last year, but never got it up to youtube... In the mean time, you can get it from here...

ftp://ftp.ansys.com/outgoing/simon/dead link....zip

As for SIW's comment about mesh related geometry features being forever separated... I can't get into details yet, but things are coming back together in a way that you will probably like... Product management is listening and Development is working to make it happen. These things just take time to do right.

(I moved the movie to youtube and removed it from my FTP... See the next post.)

Last edited by PSYMN; January 15, 2011 at 01:44. Reason: Moved file...
PSYMN is offline   Reply With Quote

Old   January 13, 2011, 15:14
Default Named Selections...
  #9
Senior Member
 
PSYMN's Avatar
 
Simon Pereira
Join Date: Mar 2009
Location: Ann Arbor, MI
Posts: 2,662
Blog Entries: 1
Rep Power: 35
PSYMN has a spectacular aura aboutPSYMN has a spectacular aura about
Named selections are the key to boundary conditions in Workbench... And here it is on Youtube...

http://www.youtube.com/watch?v=-6Z2v8geroQ

I will probably take down the FTP file soon...
PSYMN is offline   Reply With Quote

Old   January 18, 2011, 04:18
Default
  #10
New Member
 
Join Date: Jan 2011
Posts: 5
Rep Power: 6
tetraedro is on a distinguished road
Thank you so much! Your suggestions were very useful!
I have another question: how can I run a serie of cases in CFX-solver automatically? for example, if I have 3 .def files, can I run them in sequence, without being at my pc?
tetraedro is offline   Reply With Quote

Old   January 19, 2011, 10:27
Default
  #11
Senior Member
 
PSYMN's Avatar
 
Simon Pereira
Join Date: Mar 2009
Location: Ann Arbor, MI
Posts: 2,662
Blog Entries: 1
Rep Power: 35
PSYMN has a spectacular aura aboutPSYMN has a spectacular aura about
Yes, in WB you can setup a series of runs (design points) in the parameter set bar. Or you could use DesignXplorer to create a DOE and then run thru it. The advantage of DX is that you can post process to really explore your parameters and see sensitivities, correlations, etc. You can also run goal driven optimization or six sigma analysis.

On the simpler end, I would guess that there is a way to just get stand alone CFX to step thru a series of solves, but maybe that question would be be best asked on the CFX users forum.
PSYMN is offline   Reply With Quote

Old   October 5, 2012, 01:32
Unhappy Mesh refinement in CFX method
  #12
New Member
 
Md Nazmus Sakib
Join Date: Apr 2012
Posts: 5
Rep Power: 5
nsakib520 is on a distinguished road
Hi

i used ANSYS 12 upto august 2012, as it was available in my lab. Suddenly they have upgraded to ANSYS 14 & i find that CFX MESH method is no longer in the Mesh methods.

I have one question; i use the feature of MESH REFINEMENT with line control creating a control sphere within which i could refine the mesh size... How can i do this now in workbench in Automatic method???


Sakib
nsakib520 is offline   Reply With Quote

Old   October 5, 2012, 09:20
Default
  #13
Senior Member
 
PSYMN's Avatar
 
Simon Pereira
Join Date: Mar 2009
Location: Ann Arbor, MI
Posts: 2,662
Blog Entries: 1
Rep Power: 35
PSYMN has a spectacular aura aboutPSYMN has a spectacular aura about
Right click, insert size, change "type" to "Sphere of influence" and set up the other info.

For the sphere center, you need to setup an LCS.

Look up sphere of influence in the help for more details.


Also, there is such a thing as "body of influence". This allows you to select a body to control the refinement, even if the body is not actually treated as geometry... You could create this body in any shape that you need. Again, refer to the help doc for usage details.
__________________
-----------------------------------------
Please help guide development at ANSYS by filling in these surveys

Public ANSYS ICEM CFD Users Survey

This second one is more general (Gambit, TGrid and ANSYS Meshing users welcome)...

CFD Online Users Survey
PSYMN is offline   Reply With Quote

Old   October 10, 2012, 05:55
Default
  #14
Member
 
Tamil Nadu
Join Date: Oct 2012
Posts: 44
Rep Power: 4
nkme2007 is on a distinguished road
Hello All,

I want to do analysis of heat transfer from water flowing through pipes submerged inside concrete. I am modelling in GAMBIT and wish to analyse it on Ansys FLUENT.

Can anybody help me out, how to model and simulate?

Does any tutorials exist?
nkme2007 is offline   Reply With Quote

Old   April 12, 2013, 11:05
Default
  #15
New Member
 
Chouatah Roza
Join Date: Mar 2013
Posts: 7
Rep Power: 4
Roza is on a distinguished road
Hello everyone,
Actually I am still using the CFX mesh and have a probleme with the meshing of a Half sphere inside a tube.
when I try to generate the msh it says that there are no boundry found as you can see on the picture below, and I can't seem to find a sollution so please can anyone help me find it ?
Thank you and have a nice day.
Attached Images
File Type: jpg Sans titre.jpg (44.3 KB, 10 views)
Roza is offline   Reply With Quote

Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
How to import CFX mesh & result to ANSYS Structure Ton CFX 2 May 19, 2009 21:54
export comsol mesh into ansys or cfx amazdeh Main CFD Forum 0 April 13, 2009 13:40
Problem on mesh import to Ansys CFX 10.0 Stephen Lau CFX 1 April 18, 2007 03:02
MFX: weired force transfer from cfx to ansys zyf CFX 3 October 7, 2006 03:08
How to control Minximum mesh space? hung FLUENT 7 April 18, 2005 09:38


All times are GMT -4. The time now is 05:49.