C10 熱音響音波発生機の振動流れ : 共鳴管出口付近の流れの観察(パルス管冷凍機,熱音響機器及び関連要素と応用システム(3))

概要

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The heater built-in type thermoacoustic sound wave generator, in which micro ceramic heaters and fins were set, was employed. The flow observation and visualization were performed by the tuft method, in which Japanese embroidery thread was employed, for confirming flow around the resonance tube outlet. Inside the resonance tube, the typical oscillatory flow is observed far upstream on one hand and both strong flow reversal and contraction flow are seen just before the tube outlet on the other. Outside the resonance tube, the entrainment just behind the tube outlet, the pulsating flow in the central region and the intermittent flow in the outer region are observed far downstream.
一般社団法人日本機械学会の論文
2008-11-05