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1D axisymmetric equation based modelling basics

Posted 11 août 2015, 09:58 UTC−4 Fluid & Heat, Computational Fluid Dynamics (CFD), Studies & Solvers Version 4.3 0 Replies

Nikhil Nambiar
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I am pretty new to comsol. I need to model a 1d axisymmetric problem of fluid flow at the moment and develop the model further. I cant find the fluid flow physics for 1D. so i decided to try equation based modelling.

Here are the eqautions i modelled using a pde

It is a simple couette flow model between to concentric cylindersof radii 0.0238 and 0.0064m




I am always getting last time step not converged.
Do you know what boundary conditions i should use for pressure.

Thank you
0 Replies Last Post 11 août 2015, 09:58 UTC−4
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Hello Nikhil Nambiar

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