TECHNICAL PAPERS: Internal Combustion Engines: Flow, heat transfer, and combustion

Analysis and Modeling of the Fluid-Dynamic Effects in Branched Exhaust Junctions of ICE

[+] Author and Article Information
F. Payri, E. Reyes, J. Galindo

CMT—Departamento de Máquinas y Motores Térmicos, Universidad Politécnica de Valencia, P.B. 22012, E-46071 Valencia, Spaine-mail: cmt@mot.upv.es

J. Eng. Gas Turbines Power 123(1), 197-203 (Nov 03, 2000) (7 pages) doi:10.1115/1.1339988 History: Received April 27, 2000; Revised November 03, 2000
Copyright © 2001 by ASME
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Exhaust junction instrumentation
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Pressure transducer cooler
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Detail of the junction geometry
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Cross-section diagram of the junctions (a) and interface between active and lateral branch (b)
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Velocity vectors at junction symmetry plane calculated by 3D modeling
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Flow patterns at junction
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Measured pressure downstream (location 3) and upstream (location 4: closed branch) the junction for several engine speeds
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Experimental and calculated pressure in location 4
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Mass flow rate in the lateral branch
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Actual and isentropic mass flow rate in the lateral branch
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Lateral branch discharge coefficient
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Experimental and modeled pressure. Junction without reed
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Experimental and modeled pressure. Junction with reed



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