FV schemes

ala · September 27, 2010, 11:35

Hi all, I have a question. Can i deal in open foam with dual meshes?
I mean, can i also do finite volume discretisation as node (vertex) centered fv scheme? Thanks in advance! Best regards, Alicja

ala · October 14, 2010, 14:14

I know that OpenFoam use collocated grids. But i'm not sure about the FV schemes. Do the finite volume cells agree with mesh cells? Can i also define a finite volume around a vertex (vertex centered) and not around a cell center (cell-centered)? I already looked at the fvMatrix class, and i'm thinking that this is impossible (or hard to do).

thanks!
ala

ala · October 14, 2010, 14:32

I modified a little bit the laplacianFoam in the following way:
- first I read a volScalarField f=1 (right hand side)
- next I modify this volScalarField f within the solver to f=sin( pi x )sin( pi y )
- and last i solve $-\Delta \phi = f$ with constant (equal to 0) Dirichlet BC, with $\phi : \mathbb{R}^n \rightarrow \mathbb{R}$
Is it OK like i did it?
I 've attached the modified solver and the case.

Comments and hints are appreciated!
Greetings,
Ala

ala · October 19, 2010, 16:25

Has nobody a hint or an idea?

Thanks in advance,
Alicja

September 27, 2010, 11:35	FV schemes	#1
ala New Member Alicja M Join Date: Mar 2009 Location: Erlangen, DE Posts: 26 Rep Power: 17	Hi all, I have a question. Can i deal in open foam with dual meshes? I mean, can i also do finite volume discretisation as node (vertex) centered fv scheme? Thanks in advance! Best regards, Alicja

October 19, 2010, 16:25	Please any help is still appreciated!	#4
ala New Member Alicja M Join Date: Mar 2009 Location: Erlangen, DE Posts: 26 Rep Power: 17	Has nobody a hint or an idea? Thanks in advance, Alicja

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
time stepping schemes for compressible DNS/LES	shyamdsundar	Main CFD Forum	0	January 14, 2010 23:15
ENERGY CONSERVATION SCHEMES!	Science Seeker	Main CFD Forum	1	May 24, 2001 12:13
Energy Conservation Schemes!	Science Seeker	Main CFD Forum	0	May 21, 2001 03:31
Advection schemes for LES	kalyan	Main CFD Forum	2	May 17, 2001 13:43
Higher-order bounded convection schemes for pure advection with discontinuity	Anthony	Main CFD Forum	3	June 13, 1999 02:36

October 14, 2010, 14:14		#2
ala New Member Alicja M Join Date: Mar 2009 Location: Erlangen, DE Posts: 26 Rep Power: 17	I know that OpenFoam use collocated grids. But i'm not sure about the FV schemes. Do the finite volume cells agree with mesh cells? Can i also define a finite volume around a vertex (vertex centered) and not around a cell center (cell-centered)? I already looked at the fvMatrix class, and i'm thinking that this is impossible (or hard to do). thanks! ala