CFD Online Logo CFD Online URL
Home > Forums > General Forums > Main CFD Forum

Blowing up of spectral method

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

LinkBack Thread Tools Display Modes
Old   March 22, 2011, 23:22
Default Blowing up of spectral method
Join Date: Mar 2009
Posts: 40
Rep Power: 10
hadesmajesty is on a distinguished road
I am using Fourier spectral method in the spanwise direction in my DNS of boundary layer transition. The nonlinear terms of NS equations are calculated pseudo-spectrally and 3/2 rule have been used for de-aliasing. When I used 8 Fourier modes, the code seems run well, but when I used 16 or more Fourier modes, the code will blow up at certain time stage after long time integration. Any suggestion to solve the problem will be appreciated.
hadesmajesty is offline   Reply With Quote


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
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 11:11
Derivation by spectral method daniel Main CFD Forum 1 February 1, 2005 23:39
comments on FDM, FEM, FVM, SM, SEM, DSEM, BEM kenn Main CFD Forum 2 July 18, 2004 18:28
Spectral Method Boundary condition Deepak Main CFD Forum 1 February 25, 2004 10:48

All times are GMT -4. The time now is 23:06.