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#1 |
New Member
Mahdi Mazloom
Join Date: Jul 2014
Location: Mashhad - Iran
Posts: 12
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TUBES_CROSSFLOW_OVER_FIG2.jpg
I want to model transient cross-wise two-dimensional flow over a fixed cylinder. Should I consider a turbulence model for the fluid for Re up to 20000? Based on attached figure from "Blevins, Flow Induced Vibration, 1990" vortex street transforms from laminar to fully turbulent for 150<Re<300000. But boundary layer stay laminar in this range of Re. If so which turbulence model should I use? Meanwhile I'v tried no turbulence modelling and the results seem good regarding Strouhal number. |
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#2 |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,816
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I would try the SST model in that range first, and if that seems to be giving you too much dissipation int he boundary layer then move to the gamma-theta turbulence transition model.
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Tags |
cfx, flow regime, turbulence, vortex shedding |
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