time step for VOF equations -- CFD Online Discussion Forums

January 5, 2020, 08:08

time step for VOF equations

ehsan1363

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Join Date: Sep 2015

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Hi everyone.
According to section "7.18.5.5.Timestep" in ''ANSYS-CFX Solver Modeling Guide'' it is often helpful to reduce the timestep for the volume fraction equations by an order of magnitude below that of the other equations. As CFX has an implicit solver, I need to know how I can use a different time step for VOF equations?

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