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programmer's documentation
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Compute an "a priori" hydrostatic pressure and its gradient associated before the Navier Stokes equations (prediction and correction steps navstv.f90). More...
Functions/Subroutines | |
| subroutine | prehyd (prhyd, grdphd) |
Compute an "a priori" hydrostatic pressure and its gradient associated before the Navier Stokes equations (prediction and correction steps navstv.f90).
This function computes a hydrostatic pressure
solving an a priori simplified momentum equation:
and using the mass equation as following:
with: 
finally, we resolve the simplified momentum equation below:
with the diffusion coefficient (
) defined as:
with a Neumann boundary condition on the hydrostatic pressure:
(see the theory guide for more details on the boundary condition formulation).
| subroutine prehyd | ( | double precision, dimension(ncelet) | prhyd, |
| double precision, dimension(ncelet,ndim) | grdphd | ||
| ) |
| [in,out] | prhyd | hydrostatic pressure predicted with the a priori momentum equation reduced |
| [out] | grdphd | the a priori hydrostatic pressure gradient |
1.8.3.1