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Air.hpp
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1// -*- mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
2// vi: set et ts=4 sw=4 sts=4:
3/*
4 This file is part of the Open Porous Media project (OPM).
5
6 OPM is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 2 of the License, or
9 (at your option) any later version.
10
11 OPM is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with OPM. If not, see <http://www.gnu.org/licenses/>.
18
19 Consult the COPYING file in the top-level source directory of this
20 module for the precise wording of the license and the list of
21 copyright holders.
22*/
27#ifndef OPM_AIR_HPP
28#define OPM_AIR_HPP
29
31
35
36#include <string_view>
37
38namespace Opm {
39
47template <class Scalar>
48class Air : public Component<Scalar, Air<Scalar> >
49{
50 typedef ::Opm::IdealGas<Scalar> IdealGas;
51
52public:
53 using Component<Scalar, Air<Scalar>>::isTabulated;
54
59 { throw std::runtime_error("Not implemented: Component::liquidIsCompressible()"); }
60
64 static std::string_view name()
65 { return "Air"; }
66
70 static bool gasIsCompressible()
71 { return true; }
72
76 static bool gasIsIdeal()
77 { return true; }
78
84 static Scalar molarMass()
85 { return 0.02896; /* [kg/mol] */ }
86
90 static Scalar criticalTemperature()
91 { return 132.531 ; /* [K] */ }
92
96 static Scalar criticalPressure()
97 { return 37.86e5; /* [Pa] */ }
98
105 template <class Evaluation>
106 static Evaluation gasDensity(const Evaluation& temperature, const Evaluation& pressure)
107 { return IdealGas::density(Evaluation(molarMass()), temperature, pressure); }
108
115 template <class Evaluation>
116 static Evaluation gasPressure(const Evaluation& temperature, Scalar density)
117 { return IdealGas::pressure(temperature, density/molarMass()); }
118
140 template <class Evaluation>
141 static Evaluation gasViscosity(const Evaluation& temperature, const Evaluation& /*pressure*/)
142 {
143 Scalar Tc = criticalTemperature();
144 Scalar Vc = 84.525138; // critical specific volume [cm^3/mol]
145 Scalar omega = 0.078; // accentric factor
146 Scalar M = molarMass() * 1e3; // molar mas [g/mol]
147 Scalar dipole = 0.0; // dipole moment [debye]
148
149 Scalar mu_r4 = 131.3 * dipole / std::sqrt(Vc * Tc);
150 mu_r4 *= mu_r4;
151 mu_r4 *= mu_r4;
152
153 Scalar Fc = 1 - 0.2756*omega + 0.059035*mu_r4;
154 Evaluation Tstar = 1.2593 * temperature/Tc;
155 Evaluation Omega_v =
156 1.16145*pow(Tstar, -0.14874) +
157 0.52487*exp(- 0.77320*Tstar) +
158 2.16178*exp(- 2.43787*Tstar);
159 return 40.7851e-7*Fc*sqrt(M*temperature)/(std::pow(Vc, 2./3)*Omega_v);
160 }
161
162 // simpler method, from old constrelAir.hh
163 template <class Evaluation>
164 static Evaluation simpleGasViscosity(const Evaluation& temperature, const Evaluation& /*pressure*/)
165 {
166 if(temperature < 273.15 || temperature > 660.) {
167 throw NumericalProblem("Air: Temperature "+std::to_string(scalarValue(temperature))+"K out of range");
168 }
169 return 1.496e-6*pow(temperature, 1.5)/(temperature + 120);
170 }
171
183 template <class Evaluation>
184 static Evaluation gasEnthalpy(const Evaluation& temperature, const Evaluation& /*pressure*/)
185 {
186 return 1005.0*temperature;
187 }
188
200 template <class Evaluation>
201 static Evaluation gasInternalEnergy(const Evaluation& temperature,
202 const Evaluation& pressure)
203 {
204 return
205 gasEnthalpy(temperature, pressure)
206 - (IdealGas::R*temperature/molarMass()); // <- pressure times specific volume of an ideal gas
207 }
208
220 template <class Evaluation>
221 static Evaluation gasThermalConductivity(const Evaluation& /*temperature*/,
222 const Evaluation& /*pressure*/)
223 {
224 // Isobaric Properties for Nitrogen in: NIST Standard
225 // see http://webbook.nist.gov/chemistry/fluid/
226 // evaluated at p=.1 MPa, T=20°C
227 // Nitrogen: 0.025398
228 // Oxygen: 0.026105
229 // lambda_air is approximately 0.78*lambda_N2+0.22*lambda_O2
230 return 0.0255535;
231 }
232
249 template <class Evaluation>
250 static Evaluation gasHeatCapacity(const Evaluation&,
251 const Evaluation&)
252 {
253 return 1005.0;
254 }
255};
256
257} // namespace Opm
258
259#endif
Abstract base class of a pure chemical species.
Provides the OPM specific exception classes.
Relations valid for an ideal gas.
A traits class which provides basic mathematical functions for arbitrary scalar floating point values...
A simple class implementing the fluid properties of air.
Definition Air.hpp:49
static Evaluation gasThermalConductivity(const Evaluation &, const Evaluation &)
Specific heat conductivity of steam .
Definition Air.hpp:221
static Evaluation gasHeatCapacity(const Evaluation &, const Evaluation &)
Specific isobaric heat capacity of pure air.
Definition Air.hpp:250
static Scalar criticalPressure()
Returns the critical pressure of .
Definition Air.hpp:96
static Evaluation gasDensity(const Evaluation &temperature, const Evaluation &pressure)
The density of at a given pressure and temperature [kg/m^3].
Definition Air.hpp:106
static Evaluation gasPressure(const Evaluation &temperature, Scalar density)
The pressure of gaseous at a given density and temperature .
Definition Air.hpp:116
static Scalar molarMass()
The molar mass in of .
Definition Air.hpp:84
static std::string_view name()
A human readable name for the .
Definition Air.hpp:64
static Evaluation gasInternalEnergy(const Evaluation &temperature, const Evaluation &pressure)
Specific internal energy of .
Definition Air.hpp:201
static bool gasIsCompressible()
Returns true iff the gas phase is assumed to be compressible.
Definition Air.hpp:70
static bool gasIsIdeal()
Returns true iff the gas phase is assumed to be ideal.
Definition Air.hpp:76
static bool liquidIsCompressible()
Returns true iff the liquid phase is assumed to be compressible.
Definition Air.hpp:58
static Evaluation gasEnthalpy(const Evaluation &temperature, const Evaluation &)
Specific enthalpy of liquid water with 273.15 K as basis.
Definition Air.hpp:184
static Scalar criticalTemperature()
Returns the critical temperature of .
Definition Air.hpp:90
static Evaluation gasViscosity(const Evaluation &temperature, const Evaluation &)
The dynamic viscosity of at a given pressure and temperature.
Definition Air.hpp:141
Abstract base class of a pure chemical species.
Definition Component.hpp:44
Relations valid for an ideal gas.
Definition IdealGas.hpp:38
static const Scalar R
The ideal gas constant .
Definition IdealGas.hpp:41
static Evaluation pressure(const Evaluation &temperature, const Evaluation &rhoMolar)
The pressure of the gas in , depending on the molar density and temperature.
Definition IdealGas.hpp:58
static Evaluation density(const Evaluation &avgMolarMass, const Evaluation &temperature, const Evaluation &pressure)
The density of the gas in , depending on pressure, temperature and average molar mass of the gas.
Definition IdealGas.hpp:48
Definition Exceptions.hpp:40
This class implements a small container which holds the transmissibility mulitpliers for all the face...
Definition Exceptions.hpp:30