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June 7, 2011, 11:57
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turbulent flow
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#1 |
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New Member
Join Date: Apr 2011
Posts: 20
Rep Power: 15  |
hi everyone
i want to know when a turbulent flow becomes fully development turbulent flow in channels ? can you help me ? |
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June 7, 2011, 12:55
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#2 |
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Senior Member
Marco A. Turcios
Join Date: Mar 2009
Location: Vancouver, BC, Canada
Posts: 740
Rep Power: 28 |
The same way you tell a flow is fully developed in real life: when the cross channel velocity profile stops changing as you move down the channel. You'll either need to sample the velocity field at different channel lengths and compare them.
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June 7, 2011, 15:28
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Hi macro
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#3 |
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New Member
Join Date: Apr 2011
Posts: 20
Rep Power: 15 |
Hi macro
1-i read in a paper , at 30-35 times hydrolic diameter in a channel and after a time , the turbulent flow becomes fully developed , am i wrong ? 2-how can i show diagram velocity ? 3-i dont understand what you say , what time after run 5,10 or 20 or 30 or more seconds ? |
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