1 files changed, 62 insertions, 0 deletions
diff --git a/Dragon/src/INFWAN.f b/Dragon/src/INFWAN.f
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+*DECK INFWAN
+      SUBROUTINE INFWAN(TEMPK,PURWGT,PRES,DENSITY)
+*
+*-----------------------------------------------------------------------
+*
+*Purpose:
+* Compute water density as a function of temperature and pressure.
+*
+*Copyright:
+* Copyright (C) 2016 Ecole Polytechnique de Montreal
+* This library is free software; you can redistribute it and/or
+* modify it under the terms of the GNU Lesser General Public
+* License as published by the Free Software Foundation; either
+* version 2.1 of the License, or (at your option) any later version.
+*
+*Author(s): R. Roy and C. Kieffer
+*
+*Parameters: input
+* TEMPK   temperature (kelvin).
+* PURWGT  D2O purity (in wgt%).
+* PRES    pressure (Pa).
+*
+*Parameters: output
+* DENSITY density (G/CM**3).
+*
+*-----------------------------------------------------------------------
+*
+      IMPLICIT NONE
+      REAL TEMPK,PRES,PURWGT,DENSITY,R2,R3,R4,R5
+      REAL TEMPC,h, zk, zmu, cp
+      REAL DEND2O, DENH2O, WGTD2O, WGTH2O
+*----------------------------------------------------------
+*  Light water density
+*----------------------------------------------------------
+      CALL THMPT(PRES,TEMPK,DENH2O,h, zk, zmu, cp)
+      IF(DENH2O .EQ.0 ) THEN
+        DENH2O=0.00000001
+      ENDIF
+*----------------------------------------------------------
+*  Heavy water density
+*----------------------------------------------------------
+      TEMPC=TEMPK-273.15
+      IF(TEMPC.GT.358.5 .OR. TEMPC.LT.90.5 .OR. PRES .GT. 22.0E6) THEN
+           DEND2O = 1.11 * DENH2O
+      ELSE
+           CALL THMHPT(PRES,TEMPK,DEND2O,R2,R3,R4,R5)
+      ENDIF
+*----------------------------------------------------------
+*  Global density for the mixture
+*----------------------------------------------------------
+      WGTD2O = 0.01 * PURWGT
+      WGTH2O = 1.00 - WGTD2O
+      IF(PURWGT .EQ. 1.0) THEN
+        DENSITY=DEND2O
+      ELSE IF(PURWGT .EQ. 0.0) THEN
+        DENSITY=DENH2O
+      ELSE
+        DENSITY=DENH2O*DEND2O/(WGTH2O*DEND2O+WGTD2O*DENH2O)
+      ENDIF
+      DENSITY=DENSITY/1000.0
+      RETURN
+      END