The algebraic kb-equation (Source File: kbalgebraic.F90)

INTERFACE:

    subroutine kbalgebraic(nlev)

DESCRIPTION:

The algebraic equation for $k_b$ simply assumes equilibrium in (158),

$$P_b = \epsilon_b \quad .$$ (171)

This equation can be re-written as

$$k_b = \dfrac{k_b \epsilon}{k \epsilon_b} \dfrac{k}{\epsilon} P_b = r \dfrac{k}{\epsilon} P_b = c_b \dfrac{k}{\epsilon} P_b \; , \quad$$ (172)

where we used the definition of the time scale ratio $r$ in (66), and assumed that $r=c_b$ is a constant.

USES:

    use turbulence,  only:     tke,eps,kb,Pb
    use turbulence,  only:     ctt,kb_min
 
   IMPLICIT NONE

INPUT PARAMETERS:

 
   number of vertical layers
    integer,  intent(in)                 :: nlev

REVISION HISTORY:

    Original author(s): Lars Umlauf
    $Log: kbalgebraic.F90,v $
    Revision 1.1  2005-06-27 10:54:33  kbk
    new files needed