From 6629d6721dd660c2a258b05b46f3225bdb2d39d8 Mon Sep 17 00:00:00 2001
From: henry <henry>
Date: Mon, 8 Jun 2009 17:42:18 +0100
Subject: [PATCH] Generalised to support static pressure as well as "pd".

---
 .../fixedFluxBuoyantPressureFvPatchScalarField.C           | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/src/finiteVolume/fields/fvPatchFields/derived/fixedFluxBuoyantPressure/fixedFluxBuoyantPressureFvPatchScalarField.C b/src/finiteVolume/fields/fvPatchFields/derived/fixedFluxBuoyantPressure/fixedFluxBuoyantPressureFvPatchScalarField.C
index 796a11e..b6f48ff 100644
--- a/src/finiteVolume/fields/fvPatchFields/derived/fixedFluxBuoyantPressure/fixedFluxBuoyantPressureFvPatchScalarField.C
+++ b/src/finiteVolume/fields/fvPatchFields/derived/fixedFluxBuoyantPressure/fixedFluxBuoyantPressureFvPatchScalarField.C
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 1991-2008 OpenCFD Ltd.
+    \\  /    A nd           | Copyright (C) 1991-2009 OpenCFD Ltd.
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -113,7 +113,17 @@ void fixedFluxBuoyantPressureFvPatchScalarField::updateCoeffs()
     const fvPatchField<scalar>& rho =
         patch().lookupPatchField<volScalarField, scalar>("rho");
 
-    gradient() = -rho.snGrad()*(g.value() & patch().Cf());
+    // If the variable name is "pd" assume it is p - rho*g.h
+    // and set the gradient appropriately.
+    // Otherwise assume the variable is the static pressure.
+    if (dimensionedInternalField().name() == "pd")
+    {
+        gradient() = -rho.snGrad()*(g.value() & patch().Cf());
+    }
+    else
+    {
+        gradient() = rho*(g.value() & patch().nf());
+    }
 
     fixedGradientFvPatchScalarField::updateCoeffs();
 }
-- 
2.11.4.GIT