[ufocfd]

that's been very useful - thanks

Originally Posted by CedricVH

You have the access member function const objectRegistry& db() const. Accessing for example U is done by the code:

const volVectorField& U = db().lookupObject<volVectorField>("U");

For accessing the mesh: when creating a boundary condition, you have access to the patch. You can thus access the mesh with:

const fvMesh& mesh = patch().boundaryMesh().mesh();