Merge pull request #13952 from marcosvanella/master

FDS Source: Remove interpolation in CFACE wall pressure calculation.

Author: marcosvanella

Source/ccib.f90

@@ -6487,43 +6487,16 @@ SUBROUTINE GET_PRES_CFACE(PRESS,IND1,IND2,CFA)
 REAL(EB), INTENT(OUT) :: PRESS
 
 ! Local Variables:
-INTEGER :: VIND, EP, INT_NPE_LO, INT_NPE_HI, INPE, ICC, IIG, JJG, KKG
-! REAL(EB):: VVEL(IAXIS:KAXIS), U_NORM
+INTEGER :: ICC, IIG, JJG, KKG
 TYPE(BOUNDARY_PROP1_TYPE), POINTER :: B1
 
-! Cell-centered variables:
-VIND=0; EP  = 1
-INT_NPE_HI  = CUT_FACE(IND1)%INT_NPE(HIGH_IND,VIND,EP,IND2)
-IF (INT_NPE_HI > 0) THEN
-   ! ! First normal velocity:
-   ! VVEL(IAXIS:KAXIS) = 0._EB
-   ! DO VIND=IAXIS,KAXIS
-   !    INT_NPE_LO  = CUT_FACE(IND1)%INT_NPE( LOW_IND,VIND,EP,IND2)
-   !    INT_NPE_HI  = CUT_FACE(IND1)%INT_NPE(HIGH_IND,VIND,EP,IND2)
-   !    DO INPE=INT_NPE_LO+1,INT_NPE_LO+INT_NPE_HI
-   !       VVEL(VIND) = VVEL(VIND) + CUT_FACE(IND1)%INT_COEF(INPE)*CUT_FACE(IND1)%INT_FVARS(INT_VEL_IND,INPE)
-   !    ENDDO
-   ! ENDDO
-   ! U_NORM = DOT_PRODUCT(VVEL , CFACE(CUT_FACE(IND1)%CFACE_INDEX(IND2))%NVEC)
-
-   ! Now Pressure:
-   ! VIND=0;
-   PRESS=0._EB
-   INT_NPE_LO  = CUT_FACE(IND1)%INT_NPE( LOW_IND,VIND,EP,IND2)
-   ! INT_NPE_HI  = CUT_FACE(IND1)%INT_NPE(HIGH_IND,VIND,EP,IND2)
-   DO INPE=INT_NPE_LO+1,INT_NPE_LO+INT_NPE_HI
-      PRESS = PRESS + CUT_FACE(IND1)%INT_COEF(INPE)*CUT_FACE(IND1)%INT_CVARS( INT_P_IND,INPE)
-   ENDDO
-   ! PRESS = PRESS + B1%RHO_F*U_NORM**2._EB
-ELSE
-   B1 => BOUNDARY_PROP1(CFA%B1_INDEX)
-   ! Underlying cell approximate value:
-   ICC = CUT_FACE(IND1)%CELL_LIST(2,LOW_IND,IND2)
-   IIG = CUT_CELL(ICC)%IJK(1)
-   JJG = CUT_CELL(ICC)%IJK(2)
-   KKG = CUT_CELL(ICC)%IJK(3)
-   PRESS=B1%RHO_G*(H(IIG,JJG,KKG)-KRES(IIG,JJG,KKG))
-ENDIF
+B1 => BOUNDARY_PROP1(CFA%B1_INDEX)
+! Underlying cell values corresponding to cut-cell:
+ICC = CUT_FACE(IND1)%CELL_LIST(2,LOW_IND,IND2)
+IIG = CUT_CELL(ICC)%IJK(IAXIS)
+JJG = CUT_CELL(ICC)%IJK(JAXIS)
+KKG = CUT_CELL(ICC)%IJK(KAXIS)
+PRESS=B1%RHO_G*(H(IIG,JJG,KKG)-KRES(IIG,JJG,KKG))
 
 RETURN
 END SUBROUTINE GET_PRES_CFACE

Validation/UWO_Wind_Tunnel/FDS_Input_Files/UWO_SS21_Test6_40ft_0_10mm.fds

@@ -7,7 +7,7 @@
 
 &MISC SIMULATION_MODE='LES', BNDF_DEFAULT=.FALSE. /
 
-&PRES MAX_PRESSURE_ITERATIONS=50 /
+&PRES SOLVER='UGLMAT HYPRE' /
 
 &SURF ID='BUILDING', RGB=245,245,245 /
 &SURF ID='GROUND', ROUGHNESS=0.0003, RGB=110,139,61 /

Validation/UWO_Wind_Tunnel/FDS_Input_Files/UWO_SS21_Test6_40ft_0_20mm.fds

@@ -7,7 +7,7 @@
 
 &MISC SIMULATION_MODE='LES', BNDF_DEFAULT=.FALSE. /
 
-&PRES MAX_PRESSURE_ITERATIONS=50 /
+&PRES SOLVER='UGLMAT HYPRE' /
 
 &SURF ID='BUILDING', RGB=245,245,245 /
 &SURF ID='GROUND', ROUGHNESS=0.0003, RGB=110,139,61 /

Validation/UWO_Wind_Tunnel/FDS_Input_Files/UWO_SS21_Test6_40ft_45_10mm.fds

@@ -9,7 +9,7 @@
 
 &MISC SIMULATION_MODE='LES', BNDF_DEFAULT=.FALSE. /
 
-&PRES MAX_PRESSURE_ITERATIONS=50 /
+&PRES SOLVER='UGLMAT HYPRE' /
 
 &SURF ID='BUILDING', RGB=245,245,245 /
 &SURF ID='GROUND', ROUGHNESS=0.0003, RGB=110,139,61 /

Validation/UWO_Wind_Tunnel/FDS_Input_Files/UWO_SS21_Test6_40ft_45_20mm.fds

@@ -9,7 +9,7 @@
 
 &MISC SIMULATION_MODE='LES', BNDF_DEFAULT=.FALSE. /
 
-&PRES MAX_PRESSURE_ITERATIONS=50 /
+&PRES SOLVER='UGLMAT HYPRE' /
 
 &SURF ID='BUILDING', RGB=245,245,245 /
 &SURF ID='GROUND', ROUGHNESS=0.0003, RGB=110,139,61 /