1 /*---------------------------------------------------------------------------*\
3 \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
5 \\ / A nd | Copyright (C) 1991-2009 OpenCFD Ltd.
7 -------------------------------------------------------------------------------
9 This file is part of OpenFOAM.
11 OpenFOAM is free software; you can redistribute it and/or modify it
12 under the terms of the GNU General Public License as published by the
13 Free Software Foundation; either version 2 of the License, or (at your
14 option) any later version.
16 OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
17 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
18 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
21 You should have received a copy of the GNU General Public License
22 along with OpenFOAM; if not, write to the Free Software Foundation,
23 Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
25 \*---------------------------------------------------------------------------*/
27 // * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
29 // Construct from components
30 inline Foam::TroeFallOffFunction::TroeFallOffFunction
45 // Construct from Istream
46 inline Foam::TroeFallOffFunction::TroeFallOffFunction(Istream& is)
48 alpha_(readScalar(is.readBegin("TroeFallOffFunction(Istream&)"))),
49 Tsss_(readScalar(is)),
53 is.readEnd("TroeFallOffFunction(Istream&)");
57 // * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
59 inline Foam::scalar Foam::TroeFallOffFunction::operator()
65 scalar logFcent = log10
69 (1 - alpha_)*exp(-T/Tsss_) + alpha_*exp(-T/Ts_) + exp(-Tss_/T),
74 scalar c = -0.4 - 0.67*logFcent;
75 static const scalar d = 0.14;
76 scalar n = 0.75 - 1.27*logFcent;
78 scalar logPr = log10(max(Pr, SMALL));
79 return pow(10.0, logFcent/(1.0 + sqr((logPr + c)/(n - d*(logPr + c)))));
83 // * * * * * * * * * * * * * * * Ostream Operator * * * * * * * * * * * * * //
85 inline Foam::Ostream& Foam::operator<<
88 const Foam::TroeFallOffFunction& tfof
91 os << token::BEGIN_LIST
93 << token::SPACE << tfof.Tsss_
94 << token::SPACE << tfof.Ts_
95 << token::SPACE << tfof.Tss_
102 // ************************************************************************* //