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发表于 2009-4-1 17:48:05
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Gas-Solid and Liquid-Solid Flow
It is possible to model the motion of a large number of solid particles in a gas or a liquid as an Eulerian-Eulerian two phase flow. Examples occur in pneumatic conveying, sedimentation in rivers, and fluidised beds.
For example, the two phases may be Water, the continuous fluid (Continuous Fluid), and Sand, the dispersed fluid (Dispersed Fluid).
In such problems, you should assign the solid phase a small insignificant molecular viscosity. This is permissible, as the physics are dominated by inter-phase drag and turbulence effects. The solid phase should be assigned free slip boundary conditions at walls. If viscosity is not set, the solid will not be available for selection in the Fluids List in ANSYS CFX-Pre.
怎么设置呢?我也需要设置这个呀。在摸索中
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