publication . Article . 2000

A Hybrid approach for aeroacoustic analysis of the engine exhaust system

Y. Sathyanarayana; M.L. Munjal;
Open Access
  • Published: 01 Aug 2000
  • Publisher: Elsevier Science Ltd
  • Country: India
Abstract
This paper presents a new hybrid approach for prediction of noise radiation from engine exhaust systems. It couples the time domain analysis of the engine and the frequency domain analysis of the muffler, and has the advantages of both. In this approach, cylinder/cavity is analyzed in the time domain to calculate the exhaust mass flux history at the exhaust valve by means of the method of characteristics, avoiding the tedious procedure of interpolation at every mesh point and solving a number of equations simultaneously at every junction. This is done by making use of an interrelationship between progressive wave variables of the linear acoustic theory and those...
Subjects
free text keywords: Mechanical Engineering, Acoustics and Ultrasonics, Acoustics, Frequency domain, Time domain, Muffler, law.invention, law, Method of characteristics, Engineering, business.industry, business, Nonlinear system, Free expansion, Acoustic theory, Aeroacoustics
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publication . Article . 2000

A Hybrid approach for aeroacoustic analysis of the engine exhaust system

Y. Sathyanarayana; M.L. Munjal;