K-1242 傾斜した平板翼から発生するエオルス音に関する実験的研究(J06-5 流体関連の騒音と振動(5))(J06 流体関連の騒音と振動)

概要

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The aerial noise generated from the span-wise inclined flat plate in the uniform flow was investigated experimentally. The following results are obtained. The sound pressure level is the largest not at zero degree of inclined angle, that is, at two-dimensional flow condition, but at 10 degree. The reason is that the span-wise correlation length is the largest not at zero degree, but at 10 degree. The frequency of the noise is not coincident with that of velocity fluctuation in the wake. The former decreases and the latter increases slightly with the inclined angle. The frequency of the noise is coincident with the frequency of the cross-spectrum in the wake at which the phase is equal to at all span locations.
2001-08-22