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Numerical Study Of Viscous Effects On Acoustic Waves

Mohd. Ghazali, Normah (2002) Numerical Study Of Viscous Effects On Acoustic Waves. Jurnal Teknologi C (37A). pp. 47-54. ISSN 0127-9696

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Official URL: http://www.penerbit.utm.my/onlinejournal/37/A/JT37...

Abstract

A two-dimensional numerical simulation of acoustic waves in a closed rectangular acoustic chamber is completed. Numerical computations are performed by solving the two-dimensional, unsteady, viscous, non-linear Navier-Stokes system of equations. Finite difference methodology was used accurate to second order both in time and space. No-slip, no through flow and zero heat flux are set boundary conditions. Acoustic waves are generated by a vibrating membrane or piston on one wall. Computations are completed for variation in viscosity of the fluid. Results of the temperature profiles seem to agree with analytical solutions for a standing wave in an enclosure and those obtained experimentally with low perturbation to mean pressure ratio. Temperature nodes and anti-nodes each was found to occur near walls and midway through the chamber respectively, results associated with a half wavelength standing wave.

Item Type:Article
Uncontrolled Keywords:numerical study, acoustic waves, membrane, piston
Subjects:T Technology > TJ Mechanical engineering and machinery
Divisions:Mechanical Engineering
ID Code:1318
Deposited By: En Mohd. Nazir Md. Basri
Deposited On:02 Mar 2007 03:50
Last Modified:09 Nov 2010 02:39

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