[louistse]

Hi everyone,

I found that
1. buoyantBoussinesqPimpleFoam is a "Transient solver for buoyant, turbulent flow of incompressible fluids", while
2. pimpleFoam is a "Large time-step transient solver for incompressible, turbulent flow, using the PIMPLE (merged PISO-SIMPLE) algorithm".

When I look at the code, I found that buoyantBoussinesqPimpleFoam solves the
A. continuity equation
B. momentum equation with body force, i.e. buoyancy. with the use of Boussinesq approximation
C. energy equation

While pimpleFoam only solves for
A. continuity equation
B. momentum equation without buoyancy.

If I remembered correctly, the energy equation should be independent of the continuity equation and the momentum equation.
What if I use buoyantBoussinesqPimpleFoam and set the gravity to be zero in the "g" file in "constant" folder? Will I obtain U and p the same as I use pimpleFoam if I am solving the same problem(same mesh, boundary condition and numerical schemes)?

Besides, I checked out the website of Fumiya Nozaki:

http://caefn.com/openfoam/solvers-buoyantboussinesqpimplefoam