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

spectral method..numercial instability

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   April 30, 2004, 14:41
Default spectral method..numercial instability
  #1
DJ
Guest
 
Posts: n/a
Hiall, I am using spectral method to resolve N-S equation in 2D.. velocity profiles seem ok.. but isobaric curves are really strange and looks bad!! i guess this is due to numerical instabilty.. i have been using collocaion method with stagered grids.. so that collocation points for momentum equation and for the continuity equations are different.. any suggestion???? please!!!

How can we get he boundary conditions for vorticity( in stream funxction- vorticity formulation of N-s Equation) for the classical problem of lid driven cavity flow??

.. In the stream function, velocity formulation of the N-S equation.. I have a forth order partial differential equation for stream function.... is it ok??? .... Thanx in advance, DJ
  Reply With Quote

Reply


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
Vortex method vs Spectral synthesizer for LES HS FLUENT 1 February 14, 2017 03:46
Spectral (finite) volume method Max Main CFD Forum 1 April 13, 2006 12:11
some thing about the spectral method ztdep Main CFD Forum 3 February 16, 2006 15:44
comments on FDM, FEM, FVM, SM, SEM, DSEM, BEM kenn Main CFD Forum 2 July 18, 2004 19:28
Spectral Method Boundary condition Deepak Main CFD Forum 1 February 25, 2004 10:48


All times are GMT -4. The time now is 23:41.