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lagrangian
dieselSpray
spraySubModels
heatTransferModel
RanzMarshall
RanzMarshall.C
Go to the documentation of this file.
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/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd | Copyright (C) 1991-2010 OpenCFD Ltd.
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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OpenFOAM is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
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\*---------------------------------------------------------------------------*/
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#include <
OpenFOAM/error.H
>
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#include "
RanzMarshall.H
"
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#include <
OpenFOAM/addToRunTimeSelectionTable.H
>
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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namespace
Foam
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{
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// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
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defineTypeNameAndDebug
(RanzMarshall, 0);
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addToRunTimeSelectionTable
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(
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heatTransferModel,
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RanzMarshall,
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dictionary
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);
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// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
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// Construct from components
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RanzMarshall::RanzMarshall
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(
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const
dictionary
& dict
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)
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:
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heatTransferModel
(dict),
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heatDict_(dict.
subDict
(typeName +
"Coeffs"
)),
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preRePrFactor_(
readScalar
(heatDict_.lookup(
"preRePrFactor"
))),
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ReExponent_(
readScalar
(heatDict_.lookup(
"ReExponent"
))),
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PrExponent_(
readScalar
(heatDict_.lookup(
"PrExponent"
)))
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{}
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// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
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RanzMarshall::~RanzMarshall
()
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{}
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// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
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bool
RanzMarshall::heatTransfer
()
const
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{
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return
true
;
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}
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scalar
RanzMarshall::Nu
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(
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const
scalar ReynoldsNumber,
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const
scalar PrandtlNumber
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)
const
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{
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return
2.0 + preRePrFactor_ *
pow
(ReynoldsNumber, ReExponent_) *
pow
(PrandtlNumber, PrExponent_);
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}
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scalar
RanzMarshall::relaxationTime
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(
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const
scalar liquidDensity,
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const
scalar diameter,
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const
scalar liquidcL,
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const
scalar
kappa
,
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const
scalar ReynoldsNumber,
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const
scalar PrandtlNumber
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)
const
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{
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scalar time = liquidDensity*
pow
(diameter, 2.0)*liquidcL/(6.0*kappa*Nu(ReynoldsNumber, PrandtlNumber));
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time =
max
(SMALL, time);
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return
time;
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}
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scalar
RanzMarshall::fCorrection
(
const
scalar z)
const
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{
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scalar
correct
;
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if
(z > 0.01)
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{
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if
(z < 1.0
e
+5)
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{
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correct = z/(
exp
(z) - 1.0);
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}
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else
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{
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correct = SMALL;
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}
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}
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else
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{
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// taylor-expansion of exp(z)...
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correct = 1.0/(1+0.5*z);
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}
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return
correct
;
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}
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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}
// End namespace Foam
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// ************************ vim: set sw=4 sts=4 et: ************************ //