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OpenFOAM representation for a partial equation

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October 24, 2013, 14:30	OpenFOAM representation for a partial equation	#1
jimbean New Member Zhengbing Join Date: Apr 2013 Posts: 20 Rep Power: 13	Dear Foamers, I am encountering a problem about how to write openfoam representation for a partial equation. $\frac{\partial c} {\partial t} + \nabla . ({\vec u - u_s \frac{\vec g} {\| g \|}}) c$ $=\nabla . ( {\nu_t \nabla c} )$ u_s is the settling velocity for particle, c is the concentration In general, the second term on the left hand of the equation is written fvm:div(phi, c) if settling velocity is omitted. phi is the flow through the cell face. Since settling velocity exists, i have no idea how to write the openfoam representation for the above equation. Any help is grateful. Best kinocopilka likes this.

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