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Hello every one,

I am solving flow on low pressure turbine profile T106A using pressure based coupled solver. I saw a paper (J of Turbomachinery) on the same profile where author had used finitie difference LES (Explicit solver) code to solve the flow. Here he had enforced CFL <=0.2. Now I would like to ask should I enforce same CFL condition in my simulation which is Implicit solver.


Presently time steps I am studying are 0.001, 0.0001 and 0.00001 which are giving me maximum cell cournt number 100, 17 and 1.3 respectively.

My questions are:

1. What time step I should take? Which parameter I should observe?

2. How much time I should run simulation?

3. What should be convergence criteria for each time step? Currently I have set it as 0.05 in relative convergence criteria.

More details in next post.