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

Multigrid method for cylindrical coordinate system

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

Reply
 
LinkBack Thread Tools Display Modes
Old   October 30, 2003, 06:01
Default Multigrid method for cylindrical coordinate system
  #1
chinthakindi
Guest
 
Posts: n/a
Hello Friends, I am developing poisson solver (3D) by using the multigrid method, the main doubt is i am using the cylindrical coordinate system, every where in the literature and in the books, all are explaining about the multigrid methods for cartessian and for cube shape domain,,mine is cylindrical shap domain, i am not getting how to apply restriction and prolongation for my domain,, i am kindly requesting you to help me

thankyou for ur sparing of time
  Reply With Quote

Old   October 31, 2003, 20:49
Default Re: Multigrid method for cylindrical coordinate sy
  #2
Junseok Kim
Guest
 
Posts: n/a
for the restriction and prolongation, you can use weighted ones which depends on finite difference or finite element, etc.

I am using cylindrical coordinates for my jet simulation, by the way, my own is axisymmetric version.

You can look at my website for the jet simulation with multigrid method.

http://www.math.uci.edu/~jskim/simulations.html
  Reply With Quote

Old   November 1, 2003, 06:37
Default Re: Multigrid method for cylindrical coordinate sy
  #3
chinthakindi
Guest
 
Posts: n/a
Hi J.Kim, thankyou for ur help,

I tryed with all restriction and prolongation techniques, it is working fine for cartessian grids but it is giving the problem with cylindrical grids, my doubt is around the axis of the round jet , my cells are becoming very close , due to this i am getting the problem,, since from one months i am struggling with this problem, if u dont mind, can u please send ur subroutines for restriction and prolongation only,, so that i will verify my code.

once again thankyou very much for ur attention for me..

  Reply With Quote

Old   November 1, 2003, 13:29
Default Re: Multigrid method for cylindrical coordinate sy
  #4
Junseok Kim
Guest
 
Posts: n/a
I have two types of restriction and prolongation routines which are written in C language.

One is cell centered finite difference version for the velocity field, and the other is cell cornered finite element version for the pressure.

Which one do you want?

junseok
  Reply With Quote

Old   November 1, 2003, 15:06
Default Re: Multigrid method for cylindrical coordinate sy
  #5
chinthakindi
Guest
 
Posts: n/a
Hi Thankyou very much for your reply, I need cell centered finite difference version,

thankyou for ur help..
  Reply With Quote

Old   November 1, 2003, 15:46
Default Re: Multigrid method for cylindrical coordinate sy
  #6
chinthakindi
Guest
 
Posts: n/a
Hi Thankyou for ur reply, I need cell centered FD version,
  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
explicit residual smoothing working with multigrid method zhanglei Main CFD Forum 0 August 30, 2010 12:20
multigrid method hawk Main CFD Forum 2 November 17, 2005 17:19
problem with multigrid method Venkatesh Main CFD Forum 2 October 8, 2003 21:59
WENO scheme on general coordinate system Jian Xia Main CFD Forum 1 October 31, 2001 13:53
Unstructured Multigrid Method for Euler equations Jian Xia Main CFD Forum 8 December 20, 1999 13:31


All times are GMT -4. The time now is 12:26.