|March 17, 2013, 21:19||
Trouble adding a directional derivative source term
Join Date: Mar 2013
Posts: 6Rep Power: 6
Hi everyone. Thanks for checking this.
I am a new OpenFOAM user, and I have been trying to create my own solver to model ferrofluid motion. In the model that I am using, there is a directional derivative source term (i.e. which I plan to approximate as where M and B are vectors).
I have M and B set up as volVectorFields, and I want multiply the entire thing by a the volume of each cell over the (constant) density. It looks like the fvc::div function needs one surface scalar field, so I created a phiB in a similar way to the phi for velocity using
(fvc::interpolate(B) & mesh.Sf())
phiB=phiB*mesh.V()/rho; fvVectorMatrix UEqn ( fvm::ddt(U) + fvm::div(phi, U) - fvm::laplacian(nu, U) ); solve(UEqn == -fvc::grad(p) + fvc::div(phiB, M));
I really appreciate your help.
|March 19, 2013, 17:51||
Join Date: May 2010
Location: Columbia, MO
Posts: 48Rep Power: 8
mesh.V() ---> volScalarField
rho ---> volScalarField
I think you have to do linear interpolation for volScalarField before math operations.
|directional derivative, ferrofluid, mesh|
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