螺旋桨噪声的无量纲化研究

Research of propeller noise non-dimensionalization

实船和船模的螺旋桨噪声存在一定的相似性,通过无量纲分析船模螺旋桨噪声可以预报实船的螺旋桨噪声。本文利用无量纲分析方法,得到影响螺旋桨噪声的一些因素,如雷诺数、桨直径、桨转速、频率、空泡数等。在此基础上对这些因素进行分析,并提出修正方法。

There is similar performance between ship propeller noise and ship model propeller noise in some degree. Ship propeller noise can be predicted by non-dimensional analysis of ship model propeller noise. Using this method, some factors that influence propeller noise are obtained, such as： Renault number, propeller diameter, propeller rotate speed, frequency, cavitation number and so on. With analyzing those factors, modified methods are put forward.