Drexel dragonThe Math ForumDonate to the Math Forum



Search All of the Math Forum:

Views expressed in these public forums are not endorsed by Drexel University or The Math Forum.


Math Forum » Discussions » sci.math.* » sci.math.num-analysis.independent

Topic: Multigrid prolongation and restriction
Replies: 0  

Advanced Search

Back to Topic List Back to Topic List  
mczero57

Posts: 9
Registered: 1/2/09
Multigrid prolongation and restriction
Posted: Apr 17, 2013 9:25 AM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

Hi all:

I have a structured 3d fine grid whose vertices are given by xf(i,j,k), yf(i,j,k), zf(i,j,k). The coarse grid is obtained by deleting every other vertex. The code is a cell centered finite volume code.

In the prolongation step, the cell average of a fine grid cell are to be interpolated from surrounding coarse grid cell averages. In the restriction step, the cell average of a coarse grid cell is to be obtained from surrounding fine grid averages.

I was wondering if someone could point me to robust methods for doing these steps in 3d. In particular, are there ways to do these steps which preserve positivity of the variables and be atleast second order accurate ?

Thanks

Sam



Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© Drexel University 1994-2014. All Rights Reserved.
The Math Forum is a research and educational enterprise of the Drexel University School of Education.