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February 15, 2013, 02:06 |
Some help with turbulent
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#1 |
New Member
Mindaugas
Join Date: Jun 2012
Posts: 25
Rep Power: 13 |
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. |
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February 19, 2013, 02:47 |
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#2 |
New Member
Mindaugas
Join Date: Jun 2012
Posts: 25
Rep Power: 13 |
Any suggestions?
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