Temperature Distribution in a Two-dimensional Closed Tube with Taconis Oscillation

Taconis oscillation is one of thermoacoustic oscillations. Taconis oscillation in a closed long tube is studied by the numerical simulations of the 2D compressible Navier-Stokes equations. Both end walls of the tube are hot (T = TH ), and the central regions of side walls are cold (T = TC ). The cri...

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Bibliographic Details
Published inTheoretical and Applied Mechanics Japan Vol. 57; pp. 351 - 362
Main Authors ISHIGAKI, Masahiro, KUZUU, Kazuto, ADACHI, Shizuko, ISHII, Katsuya
Format Journal Article
LanguageEnglish
Published Tokyo National Committee for IUTAM 2009
Japan Science and Technology Agency
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Summary:Taconis oscillation is one of thermoacoustic oscillations. Taconis oscillation in a closed long tube is studied by the numerical simulations of the 2D compressible Navier-Stokes equations. Both end walls of the tube are hot (T = TH ), and the central regions of side walls are cold (T = TC ). The critical temperature ratio by our numerical simulation is higher than theoretical critical temperature ratio in the open-closed tube. The temporal and spatial changes of the temperature in the cold region of the closed tube are stronger than those of the open-closed tube. We examine the validity of the theoretical assumptions for the open-closed tube. The assumption of uniform distribution of the time averaged temperature is not satisfied in the temperature gradient and the cold region of the closed tube.
ISSN:1348-0693
1349-4244
DOI:10.11345/nctam.57.351