Also:
- solveGravity() interface changed to take surface volume as a parameter,
- gravity vector is now given in initGravity() instead of
solveGravity(), for consistency with the incompressible solver.
Also:
- solveGravity() interface changed to take surface volume as a parameter,
- gravity vector is now given in initGravity() instead of
solveGravity(), for consistency with the incompressible solver.