Estimation of aerodynamic noise of diaphragms through IEC 60534-8-3 and CFD

Fenini, Luca; Quaroni, Luca Nicola; Malavasi, Stefano

doi:10.1177/0020294021989764

Cited by 2 publications

(2 citation statements)

References 15 publications

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“…Li et al [17] theoretically calculated and experimentally verified the aerodynamic noise generated by gas flow through valves. In accordance with the methods described in the international standard IEC 60534-8-3, Luca Fenini et al [18] predicted the intensity of aerodynamic noise through orifice plates using internal sound power level and external sound pressure level (SPL) as indicators. Li et al [19] introduced a noise calculation method for a multi-stage sleeve regulating valve and combined it with the standard IEC60534-8-3 to predict the pneumatic noise of the valve.…”

Section: Introductionmentioning

confidence: 99%

Pneumatic Noise Study of Multi-Stage Sleeve Control Valve

Jia,

Shi,

Meng

et al. 2023

Processes

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This study considers the practical issue of severe noise observed in a multi-stage sleeve control valve within an engineering project. Employing computational fluid dynamics (CFD) methodology, we initially performed numerical simulations to analyze the steady-state flow field within the control valve. Subsequently, we identified the underlying factors contributing to the noise issue within the valve. To assess the aerodynamic noise of the control valve, we applied the FW-H acoustic analogy theory and determined the intensity and distribution characteristics of the aerodynamic noise. Finally, we validated the numerical simulation results of the aerodynamic noise against theoretical calculations. Our findings indicate that the steam medium experiences high-speed flow due to disturbances caused by various components within the valve, resulting in significant turbulence intensity. This intense turbulence leads to pressure fluctuations in the steam, serving as the main catalyst for noise generation. The aerodynamic noise of the control valve exhibits a roughly symmetrical distribution along the pipe–valve system, with noticeable increases in noise levels upstream and downstream of the valve compared to other regions. The distribution cloud map obtained from the numerical simulations serves as a valuable reference for analyzing the locations where aerodynamic noise is generated. Comparing the numerical simulation results with the theoretical calculations at the noise monitoring points, we found that the noise error of the monitoring points was less than 5%, which proves the effectiveness of the numerical simulation method. These results provide essential data support for the acoustic detection of aerodynamic noise in control valves, carrying significant practical implications for engineering applications.

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Section: Introductionmentioning

confidence: 99%

Pneumatic Noise Study of Multi-Stage Sleeve Control Valve

Jia,

Shi,

Meng

et al. 2023

Processes

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“…Fenini et al calculated the aerodynamic noise emitted by the subsonic dry air fow through the orifce plate from the two aspects of the external sound pressure level and the internal sound power level and established a new CFD calculation model for solving the Reynolds number average equation. Te problem of sound power generated by the orifce plate[18]. Ding conducted a noise test for an air-cooled permanent magnet motor.…”

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confidence: 99%

A Review of the Research Progress of Motor Vibration and Noise

Qiao

2022

International Transactions on Electrical Energy Systems

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Motor vibration and noise is an important index to measure motor performance. How to reduce vibration and noise is one of the important topics in the field of motor design. Analysis, calculation, and reduction of motor vibration and noise have attracted more and more attention from motor designers. Based on the three main types of noise sources of motors, this paper firstly analyzes their causes and mechanisms and secondly introduces their main research methods. Although there are many summary articles on the research of motor vibration and noise, most of the theories and research methods on the causes of various kinds of noise are not comprehensive enough, lacking theoretical calculation and analysis, especially for mechanical noise and aerodynamic noise. This paper summarizes the research in the recent ten years, especially in the recent five years, with a view to providing a reference for the future development of this field.

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Estimation of aerodynamic noise of diaphragms through IEC 60534-8-3 and CFD

Cited by 2 publications

References 15 publications

Pneumatic Noise Study of Multi-Stage Sleeve Control Valve

Pneumatic Noise Study of Multi-Stage Sleeve Control Valve

A Review of the Research Progress of Motor Vibration and Noise

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