|February 15, 2013, 03:06||
Some help with turbulent
Join Date: Jun 2012
Posts: 25Rep Power: 3
I'm modeling 2D transient turbulent flow around cylinder. Re 10000.
I have rectangular duct internal flow around cylinder.
Model k-omega SST, low Re corection on. (Not sure is it good).
Boundary conditions: Inlet - velocity inlet velcoty 14.6073 m/s (Air). Turbulent instensity 0.5% and hydraulic diameter 0.57142 Dh=2a*b/a+b, (a=0.4, in this case reference length is b), outlet outflow.
Reference area - 0.01, because reference length 1m and cylinder diameter 0.01.
Solution methods: scheme simplec, spatial discretization all second order.
time step 0.01.
theoretical Cd around 1.1 I got 1.3-1.4.
It would be grateful to communicate with people who have already done this simulation.
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