Use of a plane jet for flow-induced noise reduction of tandem rods
Use of a plane jet for flow-induced noise reduction of tandem rods作者机构：College of Aerospace Science and Engineering National University of Defence Technology Changsha 410073 China Department of Mechanical and Manufacturing Engineering Trinity College Dublin University of Dublin Dublin 2 Dublin Ireland Energy and Power Technology Division Department of Mechanical Engineering University of Nigeria Nsukka Nigeria
出 版 物：《Chinese Physics B》 (中国物理B（英文版）)
年 卷 期：2016年第25卷第6期
页 面：270-278页
核心收录：
学科分类：12[管理学] 083002[工学-环境工程] 1204[管理学-公共管理] 120402[管理学-社会医学与卫生事业管理(可授管理学、医学学位)] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 082501[工学-飞行器设计] 0837[工学-安全科学与工程] 0825[工学-航空宇航科学与技术]
主 题：plane jet tandem rods flow-induced noise reduction vortex shedding
摘 要：Unsteady wake from upstream components of landing gear impinging on downstream components could be a strong noise *** use of a plane jet is proposed to reduce this flow-induced *** rods with different gap widths were utilized as the test *** acoustic and aerodynamic tests were conducted in order to validate this *** test results proved that overall noise emission from tandem rods could be lowered and tonal noise could be removed with use of the plane ***,when the plane jet was turned on,in some frequency range it could be the subsequent main contributor instead of tandem rods to total noise emission whilst in some frequency range rods could still be the main ***,aerodynamic tests fundamentally studied explanations for the noise ***,not only impinging speed to rods but speed and turbulence level to the top edge of the rear rod could be diminished by the upstream plane ***,the vortex shedding induced by the rear rod was reduced,which was confirmed by the speed,Reynolds stress as well as the velocity fluctuation spectral measured in its *** study confirmed the potential use of a plane jet towards landing gear noise reduction.
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