D131 熱音響現象における初期の自励振動に関する数値解析(熱の基礎と諸現象)

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The author's previous study showed that modes and magnitudes of heat input at a heater in thermoacoustic oscillators related greatly to generating of self-excited oscillation. We have carried out a numerical simulation on thermoacoustic phenomena in order to clarify the operating condition of temperature difference between both ends of a regenerator. A simple physical model in which steel wool is inserted into a test tube as a regenerator is used. Transient one-dimensional equations are solved utilizing a TVD scheme. As a result, it was found that self-excited oscillation was generated under the condition of temperature difference of 90K or above, and not under the condition of temperature difference of 60K or below. Therefore, it is considered that the numerical simulation of this study is useful to investigate the operating condition of temperature difference between both ends of a regenerator.
社団法人日本機械学会の論文
2007-11-23