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December 2, 2010, 19:47
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Fully developing flow
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#1 |
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New Member
Bobby
Join Date: Dec 2010
Posts: 21
Rep Power: 16  |
Hi
As a fluid enters a pipe and progresses further down, does the shear stress at the wall reduce whilst the boundary layer increases and viscous forces take over? Thanks |
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December 3, 2010, 21:05
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#2 |
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New Member
Kevin Erhart
Join Date: Nov 2010
Location: Orlando, FL
Posts: 10
Rep Power: 16 |
Yes. The shear stress is proportional to the gradient of velocity (in the direction normal to the wall) and since the gradient is larger in the developing region, the shear stress will also be larger here as well.
Kevin |
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