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sarah4 June 30, 2012 20:25

Turbine simulation

I saw some of the posts sharing experences doing the Phase vi turbine simulation.Some people are very successful on this. Currently i am doing the same thing to learn cfd. It is greatful if you could give me some suggestions:
1. What is the first height of your mesh to get an relatively accurate result? Say height of 0.01mm, this kind of mesh always resulted in bad cells. Can we change the sharp trailing edge to blunt trailing edge as the real blade?

2. When using two domains (one is rotational and the other one is stational) to simulate the flow around a turbine, should we define the flow rotational direction the same as the blade rotating direction (say "+Y")(turbine drive flow), or we define "-Y" for the flow? I got two different results but both positive torque. ...

Thanks in advance for your reply.

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