Turbulent Friction Factor for Two-Phase: Air-Powerlaw Fluid Flows Through Horizontal Tubes

[+] Author and Article Information
B. K. Rao

College of Engineering, Idaho State University, Pocatello, Idaho 83209

J. Fluids Eng 120(1), 136-139 (Mar 01, 1998) (4 pages) doi:10.1115/1.2819637 History: Received June 27, 1996; Revised July 11, 1997; Online December 04, 2007


Turbulent experimental friction factors for air and power-law fluid flows through a horizontal tube are reported. The power-law fluids studied were aqueous solutions of CarbopolĀ® (at concentrations 1000 and 2000 wppm). The two-phase friction factors were correlated in terms of the generalized Reynolds number (Re*). Over a range of the Re* from 6000 to 80,000, the simpler homogeneous model is accurate enough for engineering prediction of turbulent friction factor for air and power-law fluid flows through straight tubes.

Copyright Ā© 1998 by The American Society of Mechanical Engineers
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