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FullerMethod.hpp
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27 #ifndef OPM_FULLERMETHOD_HPP
28 #define OPM_FULLERMETHOD_HPP
29 
32 
33 #include <cmath>
34 
35 namespace Opm {
36 namespace BinaryCoeff {
37 
55 template <class Scalar, class Evaluation = Scalar>
56 inline Evaluation fullerMethod(const Scalar* M, // molar masses [g/mol]
57  const Scalar* SigmaNu, // atomic diffusion volume
58  const Evaluation& temperature, // [K]
59  const Evaluation& pressure) // [Pa]
60 {
61  // "effective" molar mass in [g/m^3]
62  Scalar Mab = harmonicMean(M[0], M[1]);
63 
64  // Fuller's method
65  const Evaluation& tmp = std::pow(SigmaNu[0], 1./3) + std::pow(SigmaNu[1], 1./3);
66  return 1e-4 * (143.0*pow(temperature, 1.75))/(pressure*std::sqrt(Mab)*tmp*tmp);
67 }
68 
69 } // namespace BinaryCoeff
70 } // namespace Opm
71 
72 #endif
Evaluation fullerMethod(const Scalar *M, const Scalar *SigmaNu, const Evaluation &temperature, const Evaluation &pressure)
Estimate binary diffusion coefficents in gases according to the method by Fuller.
Definition: FullerMethod.hpp:56
A traits class which provides basic mathematical functions for arbitrary scalar floating point values...
Implements some common averages.
Scalar harmonicMean(Scalar x, Scalar y)
Computes the harmonic average of two values.
Definition: Means.hpp:74