CFD Online Discussion Forums

CFD Online Discussion Forums (https://www.cfd-online.com/Forums/)
-   Main CFD Forum (https://www.cfd-online.com/Forums/main/)
-   -   MAC methods?? (https://www.cfd-online.com/Forums/main/8622-mac-methods.html)

Sibel January 30, 2005 19:51

MAC methods??
 
Hi, I want to learn MAC methods for my thesis. Have you any suggestion like a link, book. I will wait, and also can you tell me the best iteration method in CFD code.


Maciej Matyka January 31, 2005 07:59

Re: MAC methods??
 
Hi,

You can find some MAC calculations results on my web page:

http://panoramix.ift.uni.wroc.pl/~maq/eng/

I've put also some results from my MSc thesis about combination of the MAC Method with SIMPLE algoritm (iteration procedure to solve N-S equations). Paper about SIMLPE can be downloaded from my home page too.

Good Luck!

Maciej Matyka

sibel January 31, 2005 08:39

Re: MAC methods??
 
Thanks a lots. My thesis algorithm very long, and I try to understad. 2D liguid solsing in a rectangular tank, but I am modifying code to 2D curvilinear coordinates. 2D curvilinear liquid sloshing but curvilinerar coordinates. so I have to learn MAC methods

versi January 31, 2005 09:28

Re: MAC methods??
 
MAC method use staggered grid where u, v compoment and pressure are located on left face, bottom face and center of a mesh cell, respectively. In curvilinear grids, there are problems with MAC method when left face turns from pointing to +x direction to pointing to +y direction, where (x,y) are Cartesican coordinates. Unless defining both u v on both left and bottom face, or defining U, V (contravariable velocity component) instead of u,v, MAC is unable to extend to curvilinear grids.

sibel January 31, 2005 10:05

Re: MAC methods??
 
if MAC methods cause some problem, which methods do you suggest me? if you, which methods do you prefer? My problem very difficult

versi February 1, 2005 08:00

Re: MAC methods??
 
Continue to use MAC under Cartesian grids, with special treatment of curvilinear BCs. The treatment of BC in Cartesian mesh is a hot problem in CFD.

zxaar February 1, 2005 09:02

Re: MAC methods??
 
i think i know how to use BC with cartesian / mesh less type solvers, i am currently trying to implement that ,its a matter of time , i do with it


All times are GMT -4. The time now is 18:23.