[arkangel]

Hi pple

I want to solve
solve( laplacian(1,Phi) == RHS);

I am creating RHS and Phi in this manner:

volScalarField RHS
(
IOobject
(
"RHS",
runTime.timeName(),
mesh,
IOobject::READ_IF_PRESENT,
IOobject::AUTO_WRITE
),
mesh
);


how can i specify values in the RHS field, depending on coordinates or/and time. For instances:

RHS(x,y,z)=cos(x)sin(yz)*t for t> 0

Thanks

Rivera