Study of the Nonsteady Flow in a Multipulse Converter

[+] Author and Article Information
P. Flamang, R. Sierens

Laboratory of Machines and Construction of Machines, University of Gent, B-9000 Gent, Belgium

J. Eng. Gas Turbines Power 113(3), 413-418 (Jul 01, 1991) (6 pages) doi:10.1115/1.2906246 History: Received September 01, 1990; Online April 24, 2008


In a previous paper [1] a simplified model has been proposed to calculate the pressure loss coefficients of a multipulse converter under steady-state flow conditions. Therefore a special test rig has been built, which simulates the nonsteady but cyclic flow in the exhaust system of a real engine. Pressure and velocity measurements (with LDA) are compared with the results of the numerical simulation for the flow through the multipulse converter of the test rig. Finally, a comparison is made between measurements and calculations of the pressure history in the exhaust system of a real engine. This paper proves that this simplified model accurately predicts the behavior of the multipulse converter under nonstationary flow conditions.

Copyright © 1991 by The American Society of Mechanical Engineers
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