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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
A series of tests in which water was heated while flowing through a 38.6-in-long electrically heated tube of 0.527-in. ID yielded the experimental pressure-drop data shown next Isothermal pressure-drop data for the same tube are given below in terms of the dimensionless friction factor
 and Reynolds number based on the pipe diameter,
 The symbol
 denotes the average pipe velocity.


By comparing the isothermal with the noniso thermal friction coefficients at similar bulk Reynolds numbers, derive a dimensionless equation for the nonisothermal friction coefficients in the form
![]()
where µs viscosity at surface temperature, µb viscosity at bulk temperature, and n and m empirical constants.

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