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The resistance force of flow around vertical cylinder is high |
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August 25, 2013, 09:54
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The resistance force of flow around vertical cylinder is high
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#1 |
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New Member
mr
Join Date: Jul 2013
Posts: 4
Rep Power: 12  |
Dear all,
Hi,I am simulating the flow motion around a vertical cylinder under uniform current.The velocity of flow is 0.15m/s.The flow depth is 0.5m.The cylinder parameters are:diameter=0.25m,height=0.85m.The RNG turbulence model is used.In my simulation vortices can be seen.However,the resistance force calculated by Flow3D (=1.46) is much higher than the experimental result(=1.07).I don't know why this happens.Please help me! Thanks! |
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August 27, 2013, 23:46
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#2 |
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New Member
mr
Join Date: Jul 2013
Posts: 4
Rep Power: 12 |
Dear all,
I have consulted many literatures these days.Maybe the problem of my simulation is that the boundary layer resolution around component is inaccurate.But I don't know how to improve it and how to set friction and surface roughness. Could anyone help me?Thanks! |
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