[doctorWho]

Hi,


I am trying to make a boundary condition class.
For velocity, I have a class derived from fixedValueFvPatchVectorField class which has a public member function as follows:


class customUBoundary : public fixedValueFvPatchVectorField

{
...
public:
const fvScalar& Ustar();

}


another boundary condition, say customKBoundary which want to access to the public member function of customUBoundary.


I could find out a way to get the velocity field from the customKBoundary on the same boundary patch as follows:


const volVectorField& U = db().lookupObject<volVectorField>("U);
const fvMesh& mesh = U.mesh();
label patchId = mesh.boundaryMesh().findPatchID(this->patch().name());
const vectorField& velocityField = U.boundaryField()[patchId];


is there a way to get customUBoundary object so that customKBoundary class can call directly customUBoundary.Ustar() member function like


const customUBoundary& temp = dynamic_cast<customUBoundary>(U.boundaryField()[patchId])


Thanks in advance.