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Old Feb 27th 2016, 11:53 PM   #1
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velocity profile at turbulent region

why the velocity profile is slowly changing at turbulent region although the eddy motion occur more 'likely' at turbulent region and the eddy diffusivities is high?
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Old Mar 1st 2016, 12:33 PM   #2
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The flow structure is stabilizing.
Close to the wall the style of the flow is changing rapidly, it is not "fully" turbulent.
But when you move away from the influence of the wall, all the fluid is moving in the same (turbulent) manner.
You have to be careful to distinguish between the average local flow velocity in a flow region as opposed to the instantaneous velocity which (particularly within an eddy) may be very different from the average flow.
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