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How to incorporate power-law rheology in two phase Darcy's law module of COMSOL ?
Posted 11 juin 2020, 13:59 UTC−4 Fluid & Heat, Computational Fluid Dynamics (CFD), Porous Media Flow 1 Reply
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Hello everyone!
I am trying to model the flow of a power-law fluid through a 2-D porous medium of circular geometry, which is initially filled with air. I am using the two phase Darcy's law module for this purpose, but I am not being able to figure out how to incorporate the Non-Newtonian power-law rheology in this model. In the viscosity entry box, there are only two options : a) user defined b) from materail list .
Could you please help me on this?
Thanks and Regards, Sampad Laha
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Hello, possible solutions are as follows: 1. Define the material properties of the non-Newtonian fluid as a function; write the function into the expression（user defined）. 2. Official learning materials may be helpful. https://cn.comsol.com/video/model-non-newtonian-flow-with-comsol-multiphysics-webinar-cn