Numerical Analysis on Heat-Induced Vibration of Air Column.

Ishii, Tatsuya; Hihara, Eiji; Saito, Takamoto

doi:10.1299/jsmec.41.674

Cited by 6 publications

(3 citation statements)

References 5 publications

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“…They presented the similarity parameters from pressure, velocity, and characteristic length, the combinations of which are considered to vibrate the heat flow by using dimensional analysis. The similar 1-D research was performed by Ishii et al [3], in which heat supply can be controlled by the velocity change, thereby affecting fluctuating heat source and heat flow. It is mentioned that this change comes from an abrupt temperature gradient between a heat source and a heat sink, which drives mechanical energy transformation from the thermal energy to the mechanical energy.…”

Section: Introductionmentioning

confidence: 55%

Prediction of thermoacoustic instability in Rijke tube using CFD-CAA numerical method

2011

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The coupling between the emitted energy and the acoustic energy in a thermal system, e.g. combustor, may result in system instability accompanying severe vibration. In this study, the limit curve for thermo-acoustic instability is numerically obtained by using the CFD-CAA combined method. The response function for pulsating release of heat in the Rijke tube and the distribution of mean density in the tube are computed accurately by the CFD analysis and used as inputs to CAA predictions. To verify the accuracy of the prediction method, the thermo-acoustics inside the horizontal, one meter long Rijke tube of square cross-section, which has the heating part at the location of one quarter length, is simulated. The predicted instability curve agrees well with the experimental one except the low flowrate region of Re Do < 1.

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Section: Introductionmentioning

confidence: 55%

Prediction of thermoacoustic instability in Rijke tube using CFD-CAA numerical method

2011

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“…Another similar one-dimensional study using a heat source and heat sink pair was conducted by Ishii et al [52]. A steady heat supply was maintained to the heat source and the heat flux into the fluid (assumed to be an ideal gas) was allowed to fluctuate because of the velocity variation.…”

Section: Numerical Investigationsmentioning

confidence: 99%

“…The T-shaped numerical configuration is generated with structural mesh in Pointwise [52], as shown in Fig. 3 The unsteady conservation equations of mass, momentum and energy with equation of state for ideal gas are solved iteratively for a laminar 2D flow as given as…”

Section: T-shaped Thermoacoustic Modelmentioning

confidence: 99%