First slide

Fluid dynamics

Question

In a turbulent flow, the velocity of the liquid molecules in contact with the walls of the tube is

Easy

A

Zero
B

Maximum
C

Equal to critical velocity
D

May have any value

Solution

It may have any value of velocity (velocity of liquid) throughout the flow in the tube as the velocity gradients are different at different points of the tube for a turbulent flow.
(The pressure near the walls of the tube are highest throughout the flow.)

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