Estimation of breakout sound power level due to turbulence caused by an in-duct element

Research output: Journal article publicationJournal articleAcademic researchpeer-review

Abstract

在管道通风系统中的湍流区内,震荡波动的阻力气压与推力气压之间的关系已被阐述。根据Nelson与Morfey的设定,在流体质元所受波动阻力和稳态阻力之比恒定的条件下,文中推广了一种基于气压值的计算方法,用来推算由管道内部因素与湍流作用所引起的管道壁泄漏噪声之声强级。||The relationship between the fluctuating drag and lift pressures in the turbulent area within a flow duct is given. Based on the assumption of Nelson and Morfey that there is a constant of proportionality between the fluctuating drag force and the steady state drag force acting on an in-duct element, a pressure-based technique is proposed for estimating the breakout noise due to the vibration of the duct wall caused by the interaction of the turbulent flow and the in-duct elements.
Original languageEnglish
Pages (from-to)653-657
Number of pages5
Journal声学技术 (Technical acoustics)
Volume25
Issue number6
Publication statusPublished - 2007

Keywords

  • Drag pressure
  • Turbulent flow
  • Breakout noise

ASJC Scopus subject areas

  • Materials Science (miscellaneous)

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