Study of the Acoustic and Aerodynamic Characteristics of Lobed Nozzles

IF 0.9 4区物理与天体物理 Q4 ACOUSTICS

Acoustical Physics Pub Date : 2024-02-28 DOI:10.1134/S1063771023600353

V. F. Kopiev, I. V. Khramtsov, E. S. Cherenkova, M. Yu. Zaitsev, Yu. V. Bersenev, V. V. Ershov, O. Yu. Kustov, R. V. Bulbovich

引用次数: 0

Abstract

The results of a study of noise reduction in a subsonic turbulent jet using a lobed nozzle section are presented. Lobed nozzles with 6–12 lobes of different heights were considered. The experiments were carried out in two anechoic chambers: an anechoic chamber with aerodynamic noise sources at the Laboratory of Noise Generation Mechanisms and Modal Analysis of PNRPU and the AC-2 anechoic chamber with flow at TsAGI. The sound field of a subsonic jet flowing from a lobed nozzle was compared with the sound field of an equivalent round jet. The paper demonstrates ways to expand the frequency range in which jet noise is reduced using lobed nozzles. The thrust losses in lobed nozzles based on RANS calculation are estimated.

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叶状喷嘴的声学和空气动力学特性研究

摘要本文介绍了利用叶状喷嘴截面降低亚音速湍流射流噪音的研究结果。研究考虑了具有 6-12 个不同高度叶片的叶片喷嘴。实验在两个消声室中进行：一个是 PNRPU 噪声产生机制和模态分析实验室的空气动力噪声源消声室，另一个是 TsAGI 的 AC-2 流动消声室。将从叶状喷嘴流出的亚音速喷流声场与等效圆形喷流声场进行了比较。论文展示了利用叶状喷嘴扩大降低喷气噪声频率范围的方法。根据 RANS 计算估算了叶状喷嘴的推力损失。

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

Acoustical Physics 物理-声学

CiteScore

1.60

自引率

50.00%

发文量

审稿时长

3.5 months

期刊介绍： Acoustical Physics is an international peer reviewed journal published with the participation of the Russian Academy of Sciences. It covers theoretical and experimental aspects of basic and applied acoustics: classical problems of linear acoustics and wave theory; nonlinear acoustics; physical acoustics; ocean acoustics and hydroacoustics; atmospheric and aeroacoustics; acoustics of structurally inhomogeneous solids; geological acoustics; acoustical ecology, noise and vibration; chamber acoustics, musical acoustics; acoustic signals processing, computer simulations; acoustics of living systems, biomedical acoustics; physical principles of engineering acoustics. The journal publishes critical reviews, original articles, short communications, and letters to the editor. It covers theoretical and experimental aspects of basic and applied acoustics. The journal welcomes manuscripts from all countries in the English or Russian language.