如何在固-液两相流中设置固体颗粒相的molecular viscosity

timguo

我正在做固液两相流仿真。并且计划用Eulerian-Eulerian模型，但为了设置continuous fluid(水）和dispersed fluid (固体颗粒），必须设置固体相的molecular viscosity。请较高人用什么方法在CFX5.7.1中设置固体相的molecular viscosity。
谢谢！

mfsh03

可以任意设，但要非常小！！！只要大于0就行。也就是：比液相的黏度小很多

timguo

我知道这个值必须非常小。我现在想知道这个粘度值是在CFX中的什么地方设置？是在CFX中的某个地方直接设置，还是利用CEL语言在expressions编辑栏中设置？请指教。
谢谢！

030301029

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
希望有人提供简便

030301029

貌似我找到了， 不知道对不对