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

Gupta, V. H. ; Munjal, M. L. (1993) Time-domain finite-wave analysis of the engine exhaust system by means of the stationary-frame method of characteristics. Part I: Theory Sadhana (Academy Proceedings in Engineering Sciences), 18 (6). pp. 911-925. ISSN 0256-2499

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Official URL: http://www.ias.ac.in/j_archive/sadhana/18/6/911-92...

Related URL: http://dx.doi.org/10.1007/BF03028385

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:Article
Source:Copyright of this article belongs to Indian Academy of Sciences.
Keywords:Noise control; Engine simulation; Method of characteristics
ID Code:75280
Deposited On:22 Dec 2011 06:28
Last Modified:18 May 2016 19:21

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