C04 熱音響音波発生機の特性 : 共鳴管およびスタック内の振動流れ(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(1))

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  • C04 Characteristics of Thermoacoustic Sound Wave Generator : Oscillatory Flow in Resonance Tube and Stack
  • 熱音響音波発生機の特性(共鳴管およびスタック内の振動流れ)
  • ネツ オンキョウ オンパ ハッセイキ ノ トクセイ(キョウメイカン オヨビ スタック ナイ ノ シンドウ ナガレ)

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The simplified thermoacoustic sound wave generator, 72mm in radius, 860mm long, was employed for precisely measuring oscillatory flow in the resonance tube including neighboring its wall. The calculation software, Mathematica, was used for simulating oscillatory flow both in the resonance tube and in the stack. It is confirmed that the Richardson effects exist and the simulated results of velocity change and phase differences between pressure and velocity qualitatively agree with the experimental ones. The optimum stack size, which has been ensured by the past experiments, is also re-ascertained by radial velocity distributions and so on simulated by its software.

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