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

Domain decomposition

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

Reply
 
LinkBack Thread Tools Display Modes
Old   August 29, 1999, 03:27
Default Domain decomposition
  #1
rajesh
Guest
 
Posts: n/a
What is the meaning of domain decomposition?
  Reply With Quote

Old   August 30, 1999, 04:43
Default Re: Domain decomposition
  #2
Tony Chen
Guest
 
Posts: n/a
Hi there,

Domain decomposition = multi-blocks / chimera schemes

Communication among blocks are established via interpolations of the primary variables or fluxes at auxiliary interfaces for either directly connecting grids, patched grids or overlapping grids. Different mathematical models may be adopted in different zones and solved by different numerical methods. This concept brings convenience to complex configurations and problems involving relative body motion such as a train passing a tunnel.

It probably also refer to a solution acceleration scheme by alternatively solving a same system on fine and coarse grids.

Hope this helps.
  Reply With Quote

Old   August 31, 1999, 04:22
Default Re: Domain decomposition
  #3
Dr. Hrvoje Jasak
Guest
 
Posts: n/a
If you attempt to run a CFD code on a parallel machine, you'll probably use something called the "domain decomposition approach". Here, the mesh is split up into several parts, each of which is assigned to one processor. It is also necessary to set up the communication between sub-domains such that the parallel run reproduces the single processor results. This is called domain decomposition; in short, it's one of the run preparation steps for parallel CFD.
  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
CFX domain comparison Kiat110616 CFX 4 April 3, 2011 22:43
Domain Imbalance HMR CFX 3 March 6, 2011 21:10
domain decomposition dshawul Main CFD Forum 0 October 22, 2010 12:24
Domain decomposition method Bram OpenFOAM 4 August 19, 2010 18:14
Mesh generation software for Domain Decomposition ali987 Main CFD Forum 0 November 10, 2009 12:06


All times are GMT -4. The time now is 10:00.