A Fully Conservative Finite Difference Scheme for Three-Dimensional Navier–stokes Equations in Cylindrical Coordinates

The fully conservative finite volume discretization of the incompressible Navier–Stokes equations in cylindrical coordinates is constructed on a staggered grid. The proposed discretization ensures momentum conservation in a computational domain, and mass conservation within the control volumes for pressure, and velocity components. The energy conservation equation directly follows from the discrete momentum equation. Both conservative and non-conservative forms of convective terms are approximated. The proposed discrete counterpart of the vector Laplace operator is self-adjoint and negative definite.