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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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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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.