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

Higher order polynomial problem...

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

Reply
 
LinkBack Thread Tools Display Modes
Old   February 20, 2008, 17:44
Default Higher order polynomial problem...
  #1
Markas
Guest
 
Posts: n/a
Hello friends, yesterday i faced one problem and i m still searching answer for that, but couldnot. In my simulation i was having material properties at different temperatures. So i thought to define viscosity as a function of temp with help of Polynomial equation which is avalibale in fluent. i used higer order of polynomial(6 order). i found that solution was showing diverging behaviour. After that i took polynomial of lesser order(second order) in that case solutions was moving towards convergence. so why higher order is giving diverging solution?
  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
1st order vs 2nd order ken FLUENT 8 March 14, 2013 04:43
modify fvMatrix / coupled equations / higher order diffusion Jinming OpenFOAM Programming & Development 0 May 7, 2011 06:20
Unstable flow simpleFoam 2nd order Valle OpenFOAM 0 August 26, 2009 08:12
Higher order Gradient Calculation CFDtoy Main CFD Forum 3 February 13, 2009 05:42
Higher order for phase volume fractions? George Bergantz CFX 2 December 11, 2000 12:55


All times are GMT -4. The time now is 17:56.