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Fluid Mechanics - Engineering

Q1:

For laminar flow through a closed conduit

A Vmax = 2Vav

B Vmax = Vav

C Vmax = 1.5Vav

D Vmax = 0.5Vav

ANS:A - Vmax = 2Vav

For laminar flow through a closed conduit, the relationship between the maximum velocity (VmaxV_{\text{max}}Vmax​) and the average velocity (VavV_{\text{av}}Vav​) is: Vmax=2VavV_{\text{max}} = 2V_{\text{av}}Vmax​=2Vav​ This means that the maximum velocity in laminar flow through a closed conduit is twice the average velocity. Therefore, the correct answer is: Vmax = 2Vav