螺旋桨空化噪声谱

SPECTRUM OF PROPELLER CAVITATION NOISE

摘要: 本文从物理上解释了船舶螺旋奖空化噪声的成因,并从统计的观点计算了螺旋桨空化噪声的功率谱.计算结果表明,这种噪声谱由一连续谱和位于叶片频率及其谐频的一系列低频线谱组成,同时证明其连续谱是时变的（被调制的）,而这种调制具有频域不均匀的特性.

Abstract: The cause of propeller cavitation noise is described physically in this paper. Spectra of propeller cavitation noise are calculated. The resultant spectra are in good agreement with experimental results.