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Please use this identifier to cite or link to this item: http://hdl.handle.net/10203/3820

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Title 

Numerical analysis for nonlinear resonant oscillations of gas in axisymmetric closed tubes

Authors 

Chun, YDKim, YH[Kim, Yang-Hann] icon

Issue Date 

Dec-2000

Publisher 

AMER INST PHYSICS

Citation 

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, v.108, no.6, pp.2765-2774

Abstract 

A numerical investigation on nonlinear oscillations of gas in an axisymmetric closed tube is presented. When the tube is oscillated at a resonant frequency of the interior acoustic field, it is well known that acoustic variables such as density, velocity, and pressure undergo very large perturbation, often described as nonlinear oscillation. One-dimensional nonlinear governing equations, which explicitly include attenuation terms related to viscosity, were derived. Then, the equations were solved numerically by using the higher-order finite difference scheme, which divided into two parts of spatial differentiation and time evolution. Numerical simulations were accomplished to study the effect of the tube shape on the maximum pressure we can obtain. The tubes of cylindrical, conical, and cosine shape, which have the same volume and length, were investigated. Results show that the resonant frequency and patterns of pressure waves strongly depend on not only the tube shape but also the amplitude of driving acceleration. The degree of nonlinearity of wave patterns was also measured by the newly defined nonlinear energy ratio of the pressure signals. It was found that the 1/2 cosine-shape tube is more suitable to induce high compression ratio than other shapes.

ISSN 

0001-4966

URI 

http://hdl.handle.net/10203/3820

DOI 

http://dx.doi.org/10.1121/1.1312363

Link 

http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JASMAN000108000006002765000001&idtype=cvips&gifs=yes

Link 

http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000165780300008&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=395d0a69a77a4892902e43d8987013d5

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ME-Journal Papers(저널논문)


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