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RESEARCH PAPERS

Numerical and Experimental Simulations of Pseudoplastic Transient Pipe Flows

[+] Author and Article Information
X. de Saint Victor, D. P. Ly, D. Bellet

Groupe de Rhéologie, Institut de Mecanique des Fluides, Laboratoire Associé au CNRS, 2, rue Charles Camichel, 31071 Toulouse Cedex, France

J. Appl. Mech 48(1), 1-6 (Mar 01, 1981) (6 pages) doi:10.1115/1.3157573 History: Received February 01, 1980; Revised April 01, 1980; Online July 21, 2009

Abstract

The purpose of this work is to develop and to compare different methods for the determination of startup flows of a pseudoplastic fluid in pipes under a varying pressure gradient. Three methods are proposed: 1. A method involving a finite-difference calculation. 2. A method using an approximation of the acceleration term in the equation governing the phenomenon. 3. An experimental method based on measurements of local velocities by means of Laser-Doppler anemometry. The most interesting point of this work is the good agreement observed between the three methods in the non-Newtonian case.

Copyright © 1981 by ASME
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