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Pressure distribution over a bluff body RANS OR LES? |
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April 25, 2020, 13:48 |
Pressure distribution over a bluff body RANS OR LES?
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#1 |
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Join Date: Apr 2020
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Hello,
I am dealing with a geometry which is similar to the classical turbulent flow over an inclined plate (high AoA 135º). Let's, assume Re=1e6 and that my primary interest is knowing the pressure distribution on the forebody (upstream part). I know that RANS has its limitation when it comes to large flow separation and swicthing to a LES/Hybrid-RANSLES is optimal. As you already know there is a massive increase in computational cost switching to a hybrid model. However, if I am not interested in what happens downstream - could I rely on results from steady-state RANS simulation? I am not actually interested in the transient solution. Even if the simulation is not accurate would I be in the ballpark? (hard to tell I imagine) I have tried to find something similar in the forum or in the literature, though there is much said on bluff bodies and theses classical problem, I have not found an answer to my question. I am trying to model both and compare results. Many thanks in advance |
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