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ENH: RanzMarshall: generalises the Nusselt-number correlation

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This commit is contained in:
Kutalmis Bercin
2021-06-05 14:19:55 +01:00
committed by Andrew Heather
parent 1f8c6e0f5b
commit 283c94fdd0
2 changed files with 27 additions and 3 deletions
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15
src/lagrangian/intermediate/submodels/Thermodynamic/HeatTransferModel/RanzMarshall/RanzMarshall.C
View File

@ -6,6 +6,7 @@
\\/ M anipulation |
-------------------------------------------------------------------------------
Copyright (C) 2011 OpenFOAM Foundation
Copyright (C) 2021 OpenCFD Ltd.
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
@ -36,14 +37,22 @@ Foam::RanzMarshall<CloudType>::RanzMarshall
CloudType& cloud
)
:
HeatTransferModel<CloudType>(dict, cloud, typeName)
HeatTransferModel<CloudType>(dict, cloud, typeName),
a_(this->coeffDict().template getOrDefault<scalar>("a", 2.0)),
b_(this->coeffDict().template getOrDefault<scalar>("b", 0.6)),
m_(this->coeffDict().template getOrDefault<scalar>("m", 1.0/2.0)),
n_(this->coeffDict().template getOrDefault<scalar>("n", 1.0/3.0))
{}
template<class CloudType>
Foam::RanzMarshall<CloudType>::RanzMarshall(const RanzMarshall<CloudType>& htm)
:
HeatTransferModel<CloudType>(htm)
HeatTransferModel<CloudType>(htm),
a_(htm.a_),
b_(htm.b_),
m_(htm.m_),
n_(htm.n_)
{}
@ -63,7 +72,7 @@ Foam::scalar Foam::RanzMarshall<CloudType>::Nu
const scalar Pr
) const
{
return 2.0 + 0.6*sqrt(Re)*cbrt(Pr);
return a_ + b_*pow(Re, m_)*pow(Pr, n_);
}

15
src/lagrangian/intermediate/submodels/Thermodynamic/HeatTransferModel/RanzMarshall/RanzMarshall.H
View File

@ -6,6 +6,7 @@
\\/ M anipulation |
-------------------------------------------------------------------------------
Copyright (C) 2011-2016 OpenFOAM Foundation
Copyright (C) 2021 OpenCFD Ltd.
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
@ -53,6 +54,20 @@ class RanzMarshall
:
public HeatTransferModel<CloudType>
{
// Private Data
//- Correlation coefficient
const scalar a_;
//- Correlation coefficient
const scalar b_;
//- Correlation exponent of particle Reynolds number
const scalar m_;
//- Correlation exponent of Prandtl number
const scalar n_;
public: