3819 軸対称キャビティで発生する共鳴音の強さの測定(J15-2 流体関連の騒音と振動(2)-管内流れ-,J15 流体関連の騒音と振動,2005年度年次大会)

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  • 3819 Measurements of Sound Intensity on the Resonance Tone Generated by Jet Passing through an Axisymmetric Cavity

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The resonance tone generated by jet in the axissymmetric cavity which installed an orifice at the rear end was measured in the radiation sound intensity to the free space from the end of the cavity exit. It is shown that the intensity of high frequency component of the radiated resonance tone is distributed with the strong directivity. It is also shown that the sound power of the predominant component increases in proportion to the 5.0〜6.0th power of the central velocity of the cavity entrance, and its level depended on the cavity configuration irrespective of the cavity expansion ratio.

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