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

how to analyze the temporal dissipation and dispersion errors?

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   April 14, 2009, 10:26
Default how to analyze the temporal dissipation and dispersion errors?
  #1
Member
 
Edison
Join Date: Mar 2009
Posts: 40
Rep Power: 16
hadesmajesty is on a distinguished road
how to analyze the dissipation and dispersion errors generated by temporal discretisation?

If von Neumann analysis is used, for multistep schemes, finally a polynomial is obtained. There are one or more roots of such polynomial. Then how to analyze the dissipation and dispersion errors?

Thank you.
hadesmajesty is offline   Reply With Quote

Old   April 14, 2009, 12:16
Default
  #2
Senior Member
 
N/A
Join Date: Mar 2009
Posts: 189
Rep Power: 17
harishg is on a distinguished road
Look for papers by Tam et. al on dispersion relation preserving schemes. He has given a detailed analysis on the analysis of temporal discretization errors. Also Hirsch has a section on the same topic in vol. 1
harishg is offline   Reply With Quote

Old   April 22, 2009, 23:15
Default
  #3
Member
 
Edison
Join Date: Mar 2009
Posts: 40
Rep Power: 16
hadesmajesty is on a distinguished road
thank you so much
hadesmajesty is offline   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



All times are GMT -4. The time now is 03:41.