Some help with turbulent
I'm modeling 2D transient turbulent flow around cylinder. Re 10000.
I have rectangular duct internal flow around cylinder. Parametres: 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. Some advices?? Thanks. |
Any suggestions?
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