CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > FLUENT

A CAD creation problem

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

Reply
 
LinkBack Thread Tools Display Modes
Old   February 18, 2011, 07:05
Default A CAD creation problem
  #1
Senior Member
 
hamid
Join Date: Nov 2010
Posts: 185
Rep Power: 6
hamid1 is on a distinguished road
Hello Duds
I am simulating two phase flow using VOF, as my second phase initial shape is complicated I canít use fluent adapt>region which only provides simple geometries, but my question is in CAD design should I create a surface of second phase inside the main geometry?
hamid1 is offline   Reply With Quote

Old   February 18, 2011, 10:08
Default
  #2
Senior Member
 
Amir's Avatar
 
Amir
Join Date: May 2009
Location: Shiraz, Iran
Posts: 739
Blog Entries: 1
Rep Power: 14
Amir is on a distinguished road
Hi hamid,
for complicated problems initialization, you can use DEFINE_INIT to set initial condition of your second phase by UDF.
Amir is offline   Reply With Quote

Old   February 18, 2011, 11:13
Default
  #3
Senior Member
 
hamid
Join Date: Nov 2010
Posts: 185
Rep Power: 6
hamid1 is on a distinguished road
appreciation for response, actually i dont want to initialize, my problem is as follow: the second phase is kind of very undefined volume means that it is not a simple cylinder or hex or cube or sphere which is provided in adapt--> region, so I should create it in CAD when I am creating all the domain there, then the question is should I create it a surface there in CAD, or in other hand how can I define a complicated zone inside CAD after the domain generation,
thanks in advance for ur clues
hamid1 is offline   Reply With Quote

Old   February 18, 2011, 13:07
Default
  #4
Senior Member
 
Amir's Avatar
 
Amir
Join Date: May 2009
Location: Shiraz, Iran
Posts: 739
Blog Entries: 1
Rep Power: 14
Amir is on a distinguished road
by a UDF you can loop over all cells and according to their positions, you can set phase to that cells. you should know initial boundary position. to accelerate your UDF you can use multizone method ....
Amir is offline   Reply With Quote

Old   February 18, 2011, 13:24
Default
  #5
Senior Member
 
hamid
Join Date: Nov 2010
Posts: 185
Rep Power: 6
hamid1 is on a distinguished road
many thanks for ur response, I also consulted with a friend and he suggested it could be possible through designing two plans in two CAD files (one for main domain and one for the second phase) and then calling them in ICEM or assembling them inside Solidworks or etc, maybe this way is more feasible/convenient,
hamid1 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
Basic Comsol CAD Problem Sapo Main CFD Forum 0 August 27, 2010 14:58
GAMBIT, CAD import, clean up geometry problem Nuray Kayakol FLUENT 1 December 30, 2007 12:43
Adiabatic and Rotating wall (Convection problem) ParodDav CFX 5 April 29, 2007 19:13
ANSYS ICEM CFD: lsdyna input file creation problem Evan CFX 0 June 15, 2006 13:12
problem related to mesh naveen CFX 3 March 25, 2006 09:47


All times are GMT -4. The time now is 14:56.