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

error in BEM analysis

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   June 27, 2001, 17:24
Default error in BEM analysis
  #1
xiaoming
Guest
 
Posts: n/a
Hi, all. I am currently using a 3D Boudary Element code to run simulations. What I am doing is simply generating input data that defines the geometry of surface elements, then submit the task. However some results are weird. I suspect there's error induced by the mesh. However I don't have references at hand that tell me possible errors related to mesh in Boundary Element Method. Can anybody tell me the general principles to generate mesh for BEM? Thanks.
  Reply With Quote

Old   June 28, 2001, 09:57
Default Re: error in BEM analysis
  #2
TOT KTO 3HAET
Guest
 
Posts: n/a
I'm affraid this is not a right forum for BEM related questions. As you may have noticed most of the participants commercial code users. Few develop FV based techniques, less FEM. Two or three do work on spectral methods. One or two work on BEM/vortex elements. Nevertheless, coming back to your question, I'd say that THE general principle of meshing for the BEM is to make sure that the node-to-node connectivity is only counterclockwise (or, sometimes, clockwise -- depending upon how unit outward normals are evaluated in the code). This is what you have to check first. Other possible errors are hard to figure out, as you have to know inside of the algorithm (I assume you are only a user). In any case, BEM is very sensitive to any kind of error in specifying the boundary conditions, mesh data, and etc.
  Reply With Quote

Old   July 8, 2001, 02:22
Default Re: error in BEM analysis
  #3
qdu
Guest
 
Posts: n/a
This is Du Qiang, It's you? How are you now? Are you meet problem in BEM? Very sorry I don't understand the BEM. Anyway, if you need reference, you can tell me.
  Reply With Quote

Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Modelling the cross aisle direction of a steel selective rack for model analysis m8rix ANSYS 0 September 20, 2011 11:28
multifield problems on ia64 zegtuhetmaar ANSYS 7 October 21, 2010 14:18
3D analysis of Ahmed body Irshad22 FLUENT 0 December 17, 2009 05:33
Short Course: Computational Thermal Analysis Dean S. Schrage Main CFD Forum 11 September 27, 2000 18:46
Is CFD Science or Art ? John C. Chien Main CFD Forum 36 October 5, 1999 13:58


All times are GMT -4. The time now is 04:38.