(6)A dimensionless group called the Reynolds number is defined for a flow in a pipe or tubeDV pNRe%3DuV/DWhere V is the average velocity in the pipe, p is the fluid density, u is the fluid viscosity, D is the tubediameter. The second form of the group indicates that it is a ratio of the convective (turbulent)momentum flux to the molecular (viscous) momentum flux, or the ratio of inertial forces (which aredestabilizing) to viscous forces (which are stabilizing). When viscous forces dominate over inertialforces, the flow is laminar and fluid elements flow in smooth, straight streamlines, whereas when inertialforces dominate, the flow is unstable and the flow pattern break up into random fluctuating eddies It isfound that laminar flow in a pipe occurs as long as the value of Reynolds number is less than 2000.Calculate the maximum velocity and the corresponding flow rate (in cm'/s) at which lamina: tlowof water is possible in tubes with the following diameters:0.64,1.27,2.54,5.08,10.16, 15.24, and 25.40 cm.

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Answered: velocity and the corresponding flow…

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Mechanical Engineering

velocity and the corresponding flow rate (in c the following diameters: 5.08. 10.16, 15.24, and 25.40 cm.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter5: Analysis Of Convection Heat Transfer

Section: Chapter Questions

Problem 5.13P: 5.13 The torque due to the frictional resistance of the oil film between a rotating shaft and its...

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