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How to incorporate power-law rheology in two phase Darcy's law module of COMSOL ?

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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


1 Reply Last Post 26 juin 2020, 04:01 UTC−4

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Posted: 4 years ago 26 juin 2020, 04:01 UTC−4

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

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

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