Regulating valve noise prediction, liquid aerodynamic noise, it is noteworthy fluid dynamic noise is usually related to the cavitation. Traditional description of this sound is a gravel flow within the duct. Liquid power noise and cavitation link can be found in a variety of noise prediction method. These methods consider the characteristics of fluid in nonblocking flow situation under noise, as well as in the case of obstruction of cavitation flow characteristics of the noise. There are many of the fluid is a two phase mixture. These circumstances include a valve at the entrance to the gas-liquid two-phase flow, flash.
Fluid and due to the throttling effect of demonstrating the vaporized fluid. For these cases the noise prediction method is not yet established. The test results and the field investigation of multiphase systems installed, these noise levels do not contribute to the noise level of the entire plant, or does not exceed the limit of the workers their environment noise.
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