Difference between revisions of "Contrib/CompressibleMixingPhaseChangeFoam"
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< Contrib
Mkraposhin (Talk | contribs) (→Model Equations) |
Mkraposhin (Talk | contribs) (→Model Equations) |
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\frac{\partial \alpha_l \rho_l}{\partial t} + \nabla \cdot | \frac{\partial \alpha_l \rho_l}{\partial t} + \nabla \cdot | ||
\left ( | \left ( | ||
+ | \alpha_l \rho_l \mathbf{U} | ||
\right ) | \right ) | ||
+ | = | ||
+ | \dot m_l | ||
</math> | </math> | ||
Revision as of 19:56, 28 December 2012
Solver for two fluids with phase change (for example - water <---> steam), pressure and temperature density dependence
Model Equations
* Equation of state * Liquid volume transport
Let us consider transport of liquid (heavy phase) volume fraction :
The mass transfer coefficient is determined at each wall by assuming that the value of T at the wall is zero:
where is the bulk value of T and y is the direction normal to the wall.
The Sherwood number is then determined by:
where d is the characteristic dimension.
In order to use the solver, you should add , and d to the transportProperties dictionary.
The solver is based on turbFoam, with the transport of a scalar T having a mass diffusion coefficient :
* Phase change model * Momentum equation * Energy equation