Improving Zielke’s Method of Simulating Frequency-Dependent Friction in Laminar Liquid Pipe Flow

[+] Author and Article Information
Katsumasa Suzuki, Takayuki Taketomi, Sanroku Sato

Department of Mechanical Engineering, Musashi Institute of Technology, Tamazutsumi Setagayaku, Tokyo 158, Japan

J. Fluids Eng 113(4), 569-573 (Dec 01, 1991) (5 pages) doi:10.1115/1.2926516 History: Received March 08, 1990; Online May 23, 2008


Zielke’s technique of using a method of characteristics to simulate transient phenomena of a liquid transmission line is accurate, easy to apply to complicated systems and therefore, frequently used. However, it requires a very large amount of computation time and computer storage to simulate frequency-dependent friction in a transient liquid flow. Searching for a way to counteract these disadvantages, the authors took note of the fact that the weighting function, which is the root of the above problems, is given by exponential functions or other functions depending on dimensionless time. In order to perform mathematically equivalent calculation without approximations, they have developed a new method which requires much less computation time and computer storage than Zielke’s method. The calculation process is shown by a block diagram to facilitate visual understanding of the method.

Copyright © 1991 by The American Society of Mechanical Engineers
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