Binary coefficients for water and air.
#include <dumux/material/binarycoefficients/h2o_air.hh>
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| template<class Scalar > |
| static Scalar | henry (Scalar temperature) |
| | Henry coefficient \(\mathrm{[Pa]}\) for air in liquid water. More...
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| template<class Scalar > |
| static Scalar | gasDiffCoeff (Scalar temperature, Scalar pressure) |
| | Binary diffusion coefficient \(\mathrm{[m^2/s]}\) for molecular water and air. More...
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| template<class Scalar > |
| static Scalar | liquidDiffCoeff (Scalar temperature, Scalar pressure) |
| | Diffusion coefficient \(\mathrm{[m^2/s]}\) for molecular nitrogen in liquid water. More...
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◆ gasDiffCoeff()
template<class Scalar >
| static Scalar Dumux::BinaryCoeff::H2O_Air::gasDiffCoeff |
( |
Scalar |
temperature, |
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Scalar |
pressure |
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) |
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inlinestatic |
- Parameters
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| temperature | the temperature \(\mathrm{[K]}\) |
| pressure | the phase pressure \(\mathrm{[Pa]}\) Vargaftik: Tables on the thermophysical properties of liquids and gases. John Wiley & Sons, New York, 1975. [86]
Walker, Sabey, Hampton: Studies of heat transfer and water migration in soils. Dep. of Agricultural and Chemical Engineering, Colorado State University, Fort Collins, 1981. [89] |
◆ henry()
template<class Scalar >
| static Scalar Dumux::BinaryCoeff::H2O_Air::henry |
( |
Scalar |
temperature | ) |
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inlinestatic |
- Parameters
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| temperature | the temperature \(\mathrm{[K]}\) |
Henry coefficient See: Stefan Finsterle (1993, page 33 Formula (2.9)) [30]
(fitted to data from Tchobanoglous & Schroeder, 1985 [84] )
◆ liquidDiffCoeff()
template<class Scalar >
| static Scalar Dumux::BinaryCoeff::H2O_Air::liquidDiffCoeff |
( |
Scalar |
temperature, |
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Scalar |
pressure |
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) |
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inlinestatic |
Lacking better data on water-air diffusion in liquids, we use at the moment the diffusion coefficient of the air's main component nitrogen!!
- Parameters
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| temperature | the temperature \(\mathrm{[K]}\) |
| pressure | the phase pressure \(\mathrm{[Pa]}\) |
The empirical equations for estimating the diffusion coefficient in infinite solution which are presented in Reid, 1987 all show a linear dependency on temperature. We thus simply scale the experimentally obtained diffusion coefficient of Ferrell and Himmelblau by the temperature.
See: R. Reid et al. (1987, pp. 599) [72]
R. Ferrell, D. Himmelblau (1967, pp. 111-115) [28]
The documentation for this class was generated from the following file:
1.9.3