From f118d9a2a2d2cd5bace08dafcf885ea436dbb01c Mon Sep 17 00:00:00 2001
From: Kutalmis Bercin <kutalmis.bercin@esi-group.com>
Date: Wed, 30 Mar 2022 10:21:49 +0100
Subject: [PATCH] BUG: humidityTemperature: fix dropwise condensation
expression (fixes #2422)
---
...TemperatureCoupledMixedFvPatchScalarField.C | 7 ++++---
...TemperatureCoupledMixedFvPatchScalarField.H | 18 ++++++++++++------
2 files changed, 16 insertions(+), 9 deletions(-)
diff --git a/src/thermophysicalModels/thermophysicalPropertiesFvPatchFields/liquidProperties/humidityTemperatureCoupledMixed/humidityTemperatureCoupledMixedFvPatchScalarField.C b/src/thermophysicalModels/thermophysicalPropertiesFvPatchFields/liquidProperties/humidityTemperatureCoupledMixed/humidityTemperatureCoupledMixedFvPatchScalarField.C
index 1baf7faece9..61a150ce105 100644
--- a/src/thermophysicalModels/thermophysicalPropertiesFvPatchFields/liquidProperties/humidityTemperatureCoupledMixed/humidityTemperatureCoupledMixedFvPatchScalarField.C
+++ b/src/thermophysicalModels/thermophysicalPropertiesFvPatchFields/liquidProperties/humidityTemperatureCoupledMixed/humidityTemperatureCoupledMixedFvPatchScalarField.C
@@ -5,7 +5,7 @@
\\ / A nd | www.openfoam.com
\\/ M anipulation |
-------------------------------------------------------------------------------
- Copyright (C) 2015-2021 OpenCFD Ltd.
+ Copyright (C) 2015-2022 OpenCFD Ltd.
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
@@ -77,9 +77,10 @@ Foam::humidityTemperatureCoupledMixedFvPatchScalarField::htcCondensation
const scalar Re
) const
{
- if (Tsat > 295 && Tsat < 373)
+ // (BLID:Eq. 10.52-10.53)
+ if (Tsat > 295.15 && Tsat < 373.15)
{
- return 51104 + 2044*Tsat;
+ return 51104 + 2044*(Tsat - 273.15);
}
else
{
diff --git a/src/thermophysicalModels/thermophysicalPropertiesFvPatchFields/liquidProperties/humidityTemperatureCoupledMixed/humidityTemperatureCoupledMixedFvPatchScalarField.H b/src/thermophysicalModels/thermophysicalPropertiesFvPatchFields/liquidProperties/humidityTemperatureCoupledMixed/humidityTemperatureCoupledMixedFvPatchScalarField.H
index bc5d081cdb6..64cfd0f070e 100644
--- a/src/thermophysicalModels/thermophysicalPropertiesFvPatchFields/liquidProperties/humidityTemperatureCoupledMixed/humidityTemperatureCoupledMixedFvPatchScalarField.H
+++ b/src/thermophysicalModels/thermophysicalPropertiesFvPatchFields/liquidProperties/humidityTemperatureCoupledMixed/humidityTemperatureCoupledMixedFvPatchScalarField.H
@@ -5,7 +5,7 @@
\\ / A nd | www.openfoam.com
\\/ M anipulation |
-------------------------------------------------------------------------------
- Copyright (C) 2015-2021 OpenCFD Ltd.
+ Copyright (C) 2015-2022 OpenCFD Ltd.
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
@@ -52,13 +52,19 @@ Description
It assumes a drop-wise type of condensation, whereby its heat transfer
Nusselt number is calculated using:
\f{eqnarray*}{
- 51104 + 2044 T & T > 295 & T < 373 \\
- 255510 & T > 373 &
+ 51104 + 2044 (T - 273.15) & T > 295 & T < 373 \\
+ 255510 & T > 373 &
\f}
- Reference:
- - T. Bergam, A.Lavine, F. Incropera and D. Dewitt. Heat and Mass Transfer.
- 7th Edition. Chapter 10.
+ References:
+ \verbatim
+ Standard models (tag:BLID):
+ Bergman, T. L., Lavine, A. S.,
+ Incropera, F. P., & Dewitt, D. P. (2011).
+ Fundamentals of heat and mass transfer.
+ John Wiley & Sons. 7th Edition. Chapter 10.
+ ISBN:9780470501979
+ \endverbatim
The mass transfer correlation used is:
--
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