First draft of FlowVariables class to encapsulate variable handling
for velocity and pressure (#47)
todo
Have incompressible Navier-Stokes classes use FlowVariables class.
FlowVariables -> PrimitiveFlowVariables
HeatTransfer using FlowVariables
First draft of PrimitiveTempVariables.
HeatTransfer classes using PrimitiveTempVariables.
Boussinesq classes using Primitive*Variables now.
HeatTransferSource using PrimitiveTempVariables.
PhysicsName for HeatConduction
HeatConduction using PrimitiveTempVariables
Consistent header guard naming
Use hierarchical structure for variables to facilitate use
in BCHandling classes. FlowVariables was first.
Add and use PrimitiveTempFEVariables
Consistent header guard naming
Have incompressible Navier Stokes and heat transfer BCHandlers use
PrimitiveVariables for variable handling.
Merge pull request #73 from pbauman/variable_refactor

Encapsulate flow and thermal variable handling