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Water discharge managment with prosou subroutine
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TOPIC: Water discharge managment with prosou subroutine

Water discharge managment with prosou subroutine 4 years 2 months ago #36800

  • AlfredVallamir
  • AlfredVallamir's Avatar
Hi everyone,

I’ve some questions about the subroutine prosou.f.

In my case I’ve a set of sources, one is supposed to have a positive discharge (which is managed with the source file) and for the other I want the discharge to be function of the depth in such a way water which reach these source point is totally “absorbed” (like in a bathtub with multiple water outlet).

Thanks to some other subjects on this forum, I found that I can manage discharge thanks to the subroutine prosou.f

First i think the part i need to modify is this one and especially the part concerning the continuity equation ?

!
!     SOURCES
!
      IF(NREJET.GT.0) THEN
!
        YASMH = .TRUE.
!
!       SOURCE TERMS IN THE CONTINUITY EQUATION
!       BEWARE, SMH IS ALSO USED FOR TRACER
!
        DO I = 1 , NREJET
          IR = ISCE(I)
!         THE TEST IS USEFUL IN PARALLEL MODE, WHEN THE POINT SOURCE
!         IS NOT IN THE SUB-DOMAIN
          IF(IR.GT.0) THEN
            IF(OPTSOU.EQ.1) THEN
!             "NORMAL" VERSION
              SMH%R(IR)=SMH%R(IR)+DSCE(I)*UNSV2D%R(IR) !! Here, if type of source is 1
            ELSE
!             "DIRAC" VERSION
              SMH%R(IR)=SMH%R(IR)+DSCE(I) !! Here, if type of source is 2
            ENDIF
          ENDIF
        ENDDO
!
!       SOURCE TERMS IN THE MOMENTUM EQUATIONS
!       EXPLICIT TREATMENT OF MOMENTUM CONTRIBUTIONS TO THE SOURCES
!
        IF(NREJEU.GT.0) THEN
          DO I = 1 , NREJEU
            IR = ISCE(I)
!           THE TEST IS USEFUL IN PARALLEL MODE, WHEN THE POINT SOURCE
!           IS NOT IN THE SUB-DOMAIN
            IF(IR.GT.0) THEN
!             MOMENTUM ADDED BY THE SOURCE
!      -      MOMENTUM TAKEN BY THE SOURCE
              FU%R(IR)=FU%R(IR) + (VUSCE(AT,I)-UN%R(IR))*
     &        DSCE(I)*UNSV2D%R(IR)/MAX(HN%R(IR),0.1D0)
              FV%R(IR)=FV%R(IR) + (VVSCE(AT,I)-VN%R(IR))*
     &        DSCE(I)*UNSV2D%R(IR)/MAX(HN%R(IR),0.1D0)
            ENDIF
          ENDDO
        ENDIF
!
      ENDIF

The first thing I did was to introduce a new "IF bloc" to separate the two cases:

IF(DSCE(I).LT.0) THEN ! Water outlets are identified by negative values in the source file
 ! EXPRESSION
ELSE 
 SMH%R(IR)=SMH%R(IR)+DSCE(I) ! or SMH%R(IR)=SMH%R(IR)+DSCE(I)*UNSV2D%R(IR) depending of the source type.
ENDIF

Like this, water inlet is read in the source file, and i need to add a mathematical expression for water outlet.

The question is which one ?

Many variables are available in this subroutine like : HN (depth at time TN), UN and VN (speed along x and y axes ?), ...

So i wonder if you have any idea to prescribe discharge function of water depth ?

Thanks for your help !
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