Homework_C6

# Homework_C6 - Homework set #6 Due date: 09-23-05 Problem...

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Homework set #6 Due date: 09-23-05 Problem #1 : A fluid with viscosity 18.3 cp and density 1.32 g/cm3 is flowing in a long horizontal tube of radius 1.05 in (2.67 cm). For what pressure gradient will the flow become turbulent? Problem #2: Water is flowing through a long, straight, level run of smooth 6.00 in inner diameter pipe, at temperature 68 0 F. The pressure gradient along the length of the pipe is 1 psi/mile. (a) Determine the wall shear stress τ 0 in Pa? (b) Assume the flow to be turbulent and determine the radial distance from the pipe wall at which , using Fig. 5.5-3 in the textbook (second edition), also available in the lecture note. Pay attention at the definition of dimensionless variables. ,max 0.0 0.2 uu = , 0.1, , 0.4, 0.7, 0.85, 1.0 / zz (c) Plot the complete velocity profile, versus r/R. (d) Is the assumption of turbulent flow justified? ,max / Problem#3: For turbulent flow in a smooth circular tube, the function

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## This note was uploaded on 09/01/2011 for the course PGE 312 taught by Professor Peters during the Fall '08 term at University of Texas at Austin.

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Homework_C6 - Homework set #6 Due date: 09-23-05 Problem...

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