Dear PyFR developers, I am writing my master thesis using pyfr to simulate the flow over a turbine cascade similar to T106c test case used in "F. D. Witherden and A. Jameson Impact of Number Representation for High-Order Implicit Large-Eddy Simulations" paper. However I have some questions about the setup and an error I am facing at:
1. The Error “Minimum sized time step rejected”, does it mean, that the simulation diverges? Sometimes the simulation goes on, when I just restart the simulation from the last solution, however sometimes I get the error at one specific time. I also tried to limit the time step using dt-max, but it did not work. If I turn off the PI controller, I get NaN values instead. I should mention that I have relatively fine mesh (comparing with your T106c test case). Do you have any suggestions, how I can prevent this error? 2. Do I need to use anti-ailiasing just for Polynomial orders higher than 2? Did you use it for the T106c case at P2 and Re=80000? 3. In my understanding the reference Reynolds number is not defined in pyfr in case of non-dimensionalaizing, therefore we have to eliminate it by choosing a specific reference dynamic viscosity, namely Mu_t0 = rho_t0 * a_t0 * Lc (Mu_t0 : Reference dynamic viscosity, rho_t0 : Reference density, Lc : Reference Lenght). So that the reference Reynolds-number would be 1. Is that correct? Regards, Amir Matin -- You received this message because you are subscribed to the Google Groups "PyFR Mailing List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/pyfrmailinglist/1671bd27-d512-46b8-ba9d-2df1b8ac5f34n%40googlegroups.com.
