adds an implementation for
boundaryFields that stores the relevant field for Mixed, Dirichlet and Neumann BC conditions in a continous fields that can be accessed by an offset array for the specific patches
DomainField is the composition of boundaryFields and and internalField
adds an implementation for boundaryFields that stores the relevant field for Mixed, Dirichlet and Neumann BC conditions in a continous fields that can be accessed by an offset array for the specific patches
DomainField is the composition of boundaryFields and and internalField