I think these RANS model are merging volumic and time average, so may be we are calculating volumic average instead of time average? I could understand that but, really, I am a bit confused.Ĭould someone help me by explaining this?
I mean, how can we pretend that we are only seeking for the time-averaged flow but making unsteady calculus. I know there are U-RANS (unsteady RANS) methods but I don't have them with my version of Fluent and, anyway, I am very curious on how this could work? So, how can we use it for UNsteady simulations? RANS shouldn't only be used in steady analysis? I have seen that RANS is very commonly and widely used for unsteady simulations but I don't really understand that.
I am using the k-e RANS model, but I am doing unsteady simulations.Īnd I know that RANS model are based on the fact that we are simplifying turbulence by looking only for the time averaged flow. I am currently finishing my engineering studies, I am making some CFD analysis with Fluent for plasma simulation.Īnyway, I have a few questions about turbulence models.
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