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BUG: humidityTemperature: fix dropwise condensation expression (fixes #2422)

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This commit is contained in:
Kutalmis Bercin
2022-03-30 10:21:49 +01:00
committed by Andrew Heather
parent e28bed59e2
commit f118d9a2a2
2 changed files with 16 additions and 9 deletions
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7
src/thermophysicalModels/thermophysicalPropertiesFvPatchFields/liquidProperties/humidityTemperatureCoupledMixed/humidityTemperatureCoupledMixedFvPatchScalarField.C
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@ -5,7 +5,7 @@
\\ / A nd | www.openfoam.com \\ / A nd | www.openfoam.com
\\/ M anipulation | \\/ M anipulation |
------------------------------------------------------------------------------- -------------------------------------------------------------------------------
Copyright (C) 2015-2021 OpenCFD Ltd. Copyright (C) 2015-2022 OpenCFD Ltd.
------------------------------------------------------------------------------- -------------------------------------------------------------------------------
License License
This file is part of OpenFOAM. This file is part of OpenFOAM.
@ -77,9 +77,10 @@ Foam::humidityTemperatureCoupledMixedFvPatchScalarField::htcCondensation
const scalar Re const scalar Re
) const ) 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 else
{ {

18
src/thermophysicalModels/thermophysicalPropertiesFvPatchFields/liquidProperties/humidityTemperatureCoupledMixed/humidityTemperatureCoupledMixedFvPatchScalarField.H
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@ -5,7 +5,7 @@
\\ / A nd | www.openfoam.com \\ / A nd | www.openfoam.com
\\/ M anipulation | \\/ M anipulation |
------------------------------------------------------------------------------- -------------------------------------------------------------------------------
Copyright (C) 2015-2021 OpenCFD Ltd. Copyright (C) 2015-2022 OpenCFD Ltd.
------------------------------------------------------------------------------- -------------------------------------------------------------------------------
License License
This file is part of OpenFOAM. This file is part of OpenFOAM.
@ -52,13 +52,19 @@ Description
It assumes a drop-wise type of condensation, whereby its heat transfer It assumes a drop-wise type of condensation, whereby its heat transfer
Nusselt number is calculated using: Nusselt number is calculated using:
\f{eqnarray*}{ \f{eqnarray*}{
51104 + 2044 T & T > 295 & T < 373 \\ 51104 + 2044 (T - 273.15) & T > 295 & T < 373 \\
255510 & T > 373 & 255510 & T > 373 &
\f} \f}
Reference: References:
- T. Bergam, A.Lavine, F. Incropera and D. Dewitt. Heat and Mass Transfer. \verbatim
7th Edition. Chapter 10. 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: The mass transfer correlation used is: