摘要
对低马赫数叶轮离散噪声的机理及计算方法进行了研究 ,并推导了离散噪声的声压计算式、低马赫数下近似计算式和轴心线上的计算式 ,还实验验证了计算模型。研究表明 ,低马赫数情况下叶轮离散噪声主要是由脉动力造成 。
Research is carried out on the discrete noise theory and calculation method, the calculation model of discrete noise and the approximate formula under small Mach number are verified by experiments. Results show that under small Mach number the main source of discrete noise is the fluctuating force, which gives a guide for cutting discrete noise down.
出处
《风机技术》
北大核心
2004年第6期5-8,共4页
Chinese Journal of Turbomachinery
