ip_song_wright

INTERFACE:

    subroutine ip_song_wright()

DESCRIPTION:

Here, the pressure gradient is calculating according to an energy-conserving method suggested by Song (1998), which for the pressure gradient in $x$-direction looks as:

$$\begin{array}{l} \displaystyle \frac12(h_{i,j,k}+h_{i,j,k+1})... ...z^c_{i+1,j,k}-z^c_{i,j,k}}{\Delta x^u_{i,j}}\Bigg], \end{array}$$ (118)

where $z^c_{i,j,k}$ is the $z$-coordinate of the centre of the grid box with the index $(i,j,k)$.

The discretisation of $(\partial_y^* b)_k$ for the $v$-equation is done accordingly. USES:

    use internal_pressure
  $ use omp_lib
    IMPLICIT NONE

REVISION HISTORY:

    Original author(s): Hans Burchard & Karsten Bolding

LOCAL VARIABLES:

    integer                   :: i,j,k
    REALTYPE                  :: dxm1,dym1
    REALTYPE                  :: grdl,grdu,buoyl,buoyu,prgr,dxz,dyz