Improving the Safety of TPP and NPP Thermal Power Equipment through Noise Reduction Using Acoustic Barriers with Modified Top Edge

IF 1.1 4区物理与天体物理 Q4 PHYSICS, APPLIED

Technical Physics Pub Date : 2025-02-13 DOI:10.1134/S1063784224700750

V. B. Tupov, A. B. Mukhametov

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引用次数: 0

Abstract

The paper provides data based on an analysis of the results of mathematical modeling in COMSOL Multiphysics software, which allow to determine the acoustic efficiency of a noise barrier with cylindrical top device depending on the height of the barrier, the diameter of the device and the position of the cylindrical device relative to the top edge of the barrier. It was determined that a higher barrier increased the length of interference region (the region of local maxima and minima of the top device efficiency) and significantly affects the acoustic efficiency of the top device at octave bands of 250, 500, 1000 and 2000 Hz. The cylindrical device with the installation angle α_inst = 90° was found to be the most efficient for a constant distance of 5 m from the noise source to the barrier in all cases. It is shown that the acoustic efficiency of the top device with different angles remains almost constant when the barrier height is increased from 1 to 2 m. When the barrier height was increased to between 3 and 5 m, the acoustic efficiency of the device increased by about 2 dBA. The acoustic efficiency of the cylindrical device was found to increase by 2 or 3 dBA on average as the top device diameter increased from 0.2 to 0.5 m.

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改进顶边声屏障降噪提高TPP和NPP火电设备安全性

本文基于COMSOL Multiphysics软件的数学建模结果分析提供了数据，该模型可以根据屏障的高度、设备的直径以及圆柱形设备相对于屏障上边缘的位置来确定具有圆柱形顶部装置的隔音屏障的声学效率。结果表明，阻挡层越高，干扰区（顶部器件效率的局部最大值和最小值区域）的长度越长，并且在250、500、1000和2000 Hz的倍频带显著影响顶部器件的声效率。当声源与屏障的距离为5 m时，安装角为αinst = 90°的圆柱形装置效率最高。结果表明，当屏障高度从1 m增加到2 m时，不同角度顶部装置的声效率基本保持不变。当屏障高度增加到3 ~ 5 m时，装置的声效率提高了约2 dBA。当器件顶部直径从0.2 m增加到0.5 m时，圆柱形器件的声效率平均提高2 ~ 3 dBA。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Technical Physics 物理-物理：应用

CiteScore

1.30

自引率

14.30%

发文量

139

审稿时长

3-6 weeks

期刊介绍： Technical Physics is a journal that contains practical information on all aspects of applied physics, especially instrumentation and measurement techniques. Particular emphasis is put on plasma physics and related fields such as studies of charged particles in electromagnetic fields, synchrotron radiation, electron and ion beams, gas lasers and discharges. Other journal topics are the properties of condensed matter, including semiconductors, superconductors, gases, liquids, and different materials.