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August 8, 2014, 10:06 |
Beginning with LES simulations
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Member
Richardpluff
Join Date: May 2014
Posts: 95
Rep Power: 11 |
Hi everyone,
I need to do my first computations with LES in OpenFOAM. I have read something about a solver called channelFoam, which looks suitable for what I want to do, but in my OF versions (2.2 and 2.3) I am not able to find it! So I have a few questions: 1. Anybody could give me a reference where I can look carefully about the theoretical of LES? 2. I want to simulate a bifurcated flow (with two inlets and an outlet). The wall will heat the flow in my domain, so heat transfer capabilities are needed. Which solver do you suggest? I guess there are several choices to do this (pimpleFoam, rhoPimpleFoam...with LES option activated). My Mach number is too low, so I guess compressibility effects are negligible... 3. Where can I find some guidelines for mesh generation in this kind of simulations? I am not sure, but I suppose depending on my Reynolds number I should deal with boundary layer issues. How do I know where to place my first grid point? And what about y+? I am using snappyHexMesh for mesh generation. Thanks in advance. Any references and opinions are welcome. Best, CRI |
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