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

Help for fourth order accurate convective schemes

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

LinkBack Thread Tools Display Modes
Old   January 15, 2009, 07:53
Default Help for fourth order accurate convective schemes
Posts: n/a
Hi everyone:I'm a Ph.D candidate working on direct numerical simulation of turbulence. These days I read Morinishi's paper "Fully conservative higher order finite difference schemes for incompressible flow, J. Comput. Phys. 143 (1998)" and got many useful information. The schemes proposed in his paper are very famous for the trait of fully conservation. I am interested in the fourth order accurate convective scheme in a staggered grid .But I have some problem with the equation 101. I try to derive the discrete formula of Eq.101 and write it in my code. However, I found the kinetic energy increase with time ! I have checked my code for several times and it works well when the convective term is discreted by second order scheme which is also proposed in his paper. I think I maybe derive the discrete form of Eq.101 in a wrong way. So could anyone please give me some advice of how to derive the discrete form of the convective term in a right way.
  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
second order schemes marine OpenFOAM 66 October 26, 2014 12:10
Convective schemes for vector fields edoardo OpenFOAM Running, Solving & CFD 6 February 16, 2009 12:05
4th order schemes in channelOodles maka OpenFOAM Bugs 9 January 19, 2009 12:58
2nd order conservative schemes taw Main CFD Forum 1 September 16, 2008 07:05
CFL condition for higher order schemes Shyam Main CFD Forum 2 February 14, 2008 15:24

All times are GMT -4. The time now is 02:30.