Analysis and Modeling of the Fluid-Dynamic Effects in Branched Exhaust Junctions of ICE-Reference-Cited by-同舟云学术

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

Published:2000-11-03 Issue:1 Volume:123 Page:197-203
ISSN:0742-4795
Container-title:Journal of Engineering for Gas Turbines and Power
language:en
Short-container-title:

Author:

Payri F.¹,Reyes E.¹,Galindo J.¹

Affiliation:

1. CMT—Departamento de Ma´quinas y Motores Te´rmicos, Universidad Polite´cnica de Valencia, P.B. 22012, E-46071 Valencia, Spain

Abstract

The influence of exhaust junction geometry on flow-dynamics of exhaust gas is analyzed. The authors propose an experimental characterization method based on the measurement of the instantaneous pressure in the junction operating with engine exhaust flow and solving the problems posed for the accurate instantaneous pressure measurements under the adverse temperature condition. In this paper, the method is applied to two “Y” type junctions, with a reed being the unique difference between them, to determine the influence of this element on the junction behavior. The analysis of the experimental results denotes two major differences: the characteristics of the wave reflected at the junction, and the energy of the pulse transmitted to the lateral branch of the junction. The results of the analysis are introduced in the junction modeling used in a one-dimensional gas dynamic model with an important improvement in the agreement of the modeled predictions with the experimental measurements.

Publisher

ASME International

Subject

Mechanical Engineering,Energy Engineering and Power Technology,Aerospace Engineering,Fuel Technology,Nuclear Energy and Engineering

Link

http://asmedigitalcollection.asme.org/gasturbinespower/article-pdf/123/1/197/5747026/197_1.pdf

Reference21 articles.

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3. Winterbone, D. E., 1987, “The Application of Gas Dynamic for the Design of Engine Manifolds,” Congress on Modelling of ICE, Valencia, Paper No. CMT8701.

4. Blair, G. P., 1996, Design and Simulation of Two-Stroke Engines, Society of Automotive Engineers, Warrendale, PA.

5. Benajes, J., Torregrosa, A. J., Reyes, M., and Brunel, J. P., 1993, “The Effect of Exhaust Pipe Geometry on the Engine Performance,” International Congress “Diesel Engines,” SIA 93081.

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