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Airflow around rotating airfoils
Posted 23.08.2016, 22:52 GMT-4 0 Replies
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I've done a bit of work with COMSOL in the past, but mostly steady state projects. Now, I'm trying to model airflow around rotating airfoils, similar to a vertical axis wind turbine in 2 dimensions.
My set up is a large rectangle with a rotating circular domain inside of it that contains three airfoils spaced in a circular pattern. I used the deforming geometry feature to set this up. I set up identity pairs and flow continuity conditions for the interface between the rectangle and circle. This is pictured below.
Next, I wanted to see how the system behaves when placed in a uniform flow, so I added a k-epsilon turbulence model and set up inlet and outlet conditions on the large rectangle. I tried running this however it will not converge. My convergence plot is largely discontinuous.
Does anyone have any tips to help me reach convergence, or am I going about this wrong?
Thank you.
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Hello Zachary Allen
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