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Exploration on Aerodynamic Noise Characteristics for Control Valve of Steam Turbine

机译：汽轮机控制阀气动噪声特性的探讨。

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摘要

The flow within the control valve is rather complicated, which is induced by a variety of pneumatic sound sources, including turbulent mixing, turbulence and boundary layer interaction, shock wave, etc. Through presenting the aerodynamic noise generation mechanism, we introduce several classic prediction methods for control valve of steam turbine, and then give the suppression and elimination advises of the aerodynamic noise of the control valve. It mainly involves two approaches, the direct method -sound source approach method and the indirect method-the acoustic path approachment method, and it can provide important guidance to control the noise level for steam turbine control valve.
机译：控制阀内的流动相当复杂，是由多种气动声源引起的，包括湍流混合，湍流和边界层相互作用，冲击波等。通过介绍气动噪声产生机理，我们介绍了几种经典的预测方法汽轮机的控制阀，然后给出控制阀的空气动力学噪声的抑制和消除建议。它主要涉及直接法-声源法和间接法-声径法两种方法，可为控制汽轮机控制阀的噪声水平提供重要指导。

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