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The Corrected Expressions for the Four-Pole Transmission Matrix for a Duct with a Linear Temperature Gradient and an Exponential Temperature Profile
School of Mechanical Engineering, The University of Adelaide, Adelaide, Australia
- 1 School of Mechanical Engineering, The University of Adelaide, Adelaide, Australia
Open Journal of Acoustics·Volume 03 (2013)·Pages 62–66·Published 9 September 2013·DOI10.4236/oja.2013.33010
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Abstract
The purpose of this letter is to present the corrected expressions for the four-pole transmission matrix for a duct with a linear temperature gradient and an exponential temperature profile, described in Sujith [1]. The corrected equations are used in the analyses of a duct that is driven by a piston at one end and a rigid termination at the other end and the gas has a linear and exponential temperature gradients. The acoustic pressure and particle velocity along the duct are calculated and the theoretical results are compared with predictions using finite element analysis.
KeywordsDuctTransmission MatrixFour-PoleTemperature GradientFinite Element Analysis
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