Experimental Investigation into Noise Characteristics of Water Jet in Anechoic Tank

CHENG Guang-li;LUO Xia- yun;MENG Lu-wen;YANG Qiong-fang

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  • Sponsored by: China Association for Science and Technology (CAST)

    Editor-In-Chief: Xu Yida

    ISSN 1000-1093

    　

  • Hosted By: China Ordnance Society

    Published By: Acta Armamentarii

    CN 11-2176/TJ

Acta Armamentarii, a Chinese monthly journal, was first published in 1979. The journal is supervised by China Association for Science and Technology, sponsored by China Ordnance Society，and edited and published by Editorial Board of Acta Armamentarii. The Journal is included in all important domestic databases，and also collected by Engineering Index (EI, USA), Chemical Abstracts (CA, USA), Science Abstracts (SA, UK）, Abstract Journal (AJ, Russia), and Current Bibliography on Science and Technology(CBST).Acta Armamentarii has been selected into the journal Of Ordnance Science and Technology (Weapons Industry) Field Of High Quality Scientific and Technological Periodical Classification Catalogue (2022 edition), ranking T1, and the journal of Automotive Engineering Field of High Quality Scientific and technological Periodical classification Catalogue, ranking T2.
Acta Armamentarii ›› 2018, Vol. 39 ›› Issue (6) : 1165-1170. DOI: 10.3969/j.issn.1000-1093.2018.06.017
Paper

Experimental Investigation into Noise Characteristics of Water Jet in Anechoic Tank

  • CHENG Guang-li1， LUO Xia- yun1， MENG Lu-wen1， YANG Qiong-fang2
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Abstract

An experimental system for producing water jet and measuring its radiated noise was designed and constructed to study the noise characteristics of water jet. Performances of free field in an anechoic tank are evaluated, and then the noise characteristics of water jet in the anechoic tank are measured using the proposed experimental system. Analysis of experimental data demonstrates that the source level and spectral distribution of water jet can be obtained exactly using the proposed experimental system with 50 mmdiameter jet pipe at the jet efflux velocity of less than 20 m/s. Radiated power of water jet noise obtained from experiment varies approximately in proportion to the eighth power of jet efflux velocity, and water jet noise at efflux velocity of less than 20 m/s is mainly caused from its turbulent motion. Key

Key words

anechoictank / waterjetnoise / acousticalpower / effluxvelocity

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CHENG Guang-li， LUO Xia- yun， MENG Lu-wen， YANG Qiong-fang. Experimental Investigation into Noise Characteristics of Water Jet in Anechoic Tank. Acta Armamentarii. 2018, 39(6): 1165-1170 https://doi.org/10.3969/j.issn.1000-1093.2018.06.017

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第39卷第6期
2018年6月兵工学报ACTA
ARMAMENTARIIVol.39No.6Jun. 2018

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