CFD Online Discussion Forums

CFD Online Discussion Forums (http://www.cfd-online.com/Forums/)
-   Main CFD Forum (http://www.cfd-online.com/Forums/main/)
-   -   discretization of laplace equation using FVM (http://www.cfd-online.com/Forums/main/10223-discretization-laplace-equation-using-fvm.html)

stein November 7, 2005 12:43

discretization of laplace equation using FVM
 
Hello, Guys,

I am using FVM to discretize the Laplace equation on unstructured meshes (cell-center based) and found out that it is not accurate to compute gradient across the interface by two point finite differencing. If I use least square or Green's theorem to compute the gradient, the matrix becomes very complex. Is there any way to increase the accuracy of gradient computation across the interface? Thanks in advance.

Stein

zxaar November 7, 2005 22:16

Re: discretization of laplace equation using FVM
 
if you go to the CFD-wiki, i have written descrisation of poission eq. for FVM, you can use the same for Laplace. Have a look.


stein November 9, 2005 13:58

Re: discretization of laplace equation using FVM
 
I got it. Nice page, thanks.


All times are GMT -4. The time now is 13:44.