Unsteady Flow Calculation of Sophisticated Exhaust Systems Using a Multibranch Junction Model

[+] Author and Article Information
T. Bulaty, M. Widenhorn

ASEA Brown Boveri Ltd., Baden, Switzerland

J. Eng. Gas Turbines Power 115(4), 756-760 (Oct 01, 1993) (5 pages) doi:10.1115/1.2906771 History: Received August 01, 1992; Online April 24, 2008


The flow in a complex engine manifold is computed by generalizing the three-branch to the n -branch junction model. Energy-related pressure losses are implemented in the one-dimensional continuity equation and the effects of choked flow and changing flow patterns are considered. The computational results are compared with measurements on an engine with multi-entry pulse converter and compact single pipe exhaust systems. The influence of several parameters on the fuel consumption is determined.

Copyright © 1993 by The American Society of Mechanical Engineers
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