HLPA.f90 - HLPA approximation for convective term

Revision as of 20:36, 2 May 2010 by Michail (Talk | contribs)

Subroutine HLPA(Uw,Fww,Fw,Fp,Fe,Delta_f)

If (Uw.GE.0.) then

if ( ABS( Fp - 2.* Fw + Fww ).LT.ABS( Fp - Fww ) ) then

Alpha_pl = 1. else

Alpha_pl = 0.

End If

If ( (Fp - Fww).NE.0. ) then

Delta_f = Alpha_pl * (Fp - Fw)* (Fw - Fww) / (Fp - Fww)

End If

!-------------------------------------------------------------------------

If (Uw.LT.0.) then

if ( ABS( Fw - 2.* Fp + Fe ).LT.ABS( Fw - Fe ) ) then

Alpha_mn = 1. else

Alpha_mn = 0.

End If

If ( (Fw - Fe).NE.0. ) then

Delta_f = Alpha_mn * (Fw - Fp)* (Fp - Fe) / (Fw - Fe)

End If

100 continue

Return

End