Time-domain-finite-wave analysis of the engine exhaust system by means of the stationary-frame method of characteristics. Part I. Theory

Gupta, VH and Munjal, ML (1993) Time-domain-finite-wave analysis of the engine exhaust system by means of the stationary-frame method of characteristics. Part I. Theory. In: Sadhana : Academy Proceedings in Engineering Sciences, 18 (Part 6). pp. 911-925.

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Abstract

Time-domain-finite-wave analysis of the engine exhaust system is usually done using the method of characteristics. This makes use of either the moving frame method, or the stationary frame method. The stationary frame method is more convenient than its counterpart inasmuch as it avoids the tedium of graphical computations. In this paper (part I), the stationary-frame computational scheme along with the boundary conditions has been implemented. The analysis of a uniform tube, cavity-pipe junction including the engine and the radiation ends, and also the simple area discontinuities has been presented. The analysis has been done accounting for wall friction and heat-transfer for a one-dimensional unsteady flow. In the process, a few inconsistencies in the formulations reported in the literature have been pointed out and corrected. In the accompanying paper (part II) results obtained from the simulation are shown to be in good agreement with the experimental observations.

Item Type:	Journal Article
Publication:	Sadhana : Academy Proceedings in Engineering Sciences
Publisher:	Indian Academy of Sciences
Additional Information:	Copyright of this article belongs to Indian Academy of Sciences.
Keywords:	Noise control;engine simulation; method of characteristics
Department/Centre:	Division of Mechanical Sciences > Mechanical Engineering
Date Deposited:	14 Mar 2011 08:44
Last Modified:	18 Feb 2013 09:43
URI:	http://eprints.iisc.ac.in/id/eprint/35953

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