Mechanics of flow-induced sound and vibration

doi:10.1016/0022-460X(89)90445-8

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Mechanics of flow-induced sound and vibration

Journal Article•DOI•

Mechanics of flow-induced sound and vibration

22 Mar 1989-Journal of Sound and Vibration (Elsevier BV)-Vol. 129, Iss: 3, pp 537-538

About: This article is published in Journal of Sound and Vibration.The article was published on 1989-03-22. It has received 921 citations till now. The article focuses on the topics: Flow (mathematics) & Sound (geography).

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Cavitation and Bubble Dynamics

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Christopher E. Brennen¹•Institutions (1)

California Institute of Technology¹

01 Oct 2013

TL;DR: In this paper, the fundamental physical processes involved in bubble dynamics and the phenomenon of cavitation are described and explained, and a review of the free streamline methods used to treat separated cavity flows with large attached cavities is provided.

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Abstract: This book describes and explains the fundamental physical processes involved in bubble dynamics and the phenomenon of cavitation. It is intended as a combination of a reference book for those scientists and engineers who work with cavitation or bubble dynamics and as a monograph for advanced students interested in some of the basic problems associated with this category of multiphase flows. A basic knowledge of fluid flow and heat transfer is assumed but otherwise the analytical methods presented are developed from basic principles. The book begins with a chapter on nucleation and describes both the theory and observations of nucleation in flowing and non-flowing systems. The following three chapters provide a systematic treatment of the dynamics of the growth, collapse or oscillation of individual bubbles in otherwise quiescent liquids. Chapter 4 summarizes the state of knowledge of the motion of bubbles in liquids. Chapter 5 describes some of the phenomena which occur in homogeneous bubbly flows with particular emphasis on cloud cavitation and this is followed by a chapter summarizing some of the experiemntal observations of cavitating flows. The last chapter provides a review of the free streamline methods used to treat separated cavity flows with large attached cavities.

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2,994 citations

Journal Article•DOI•

Fluctuating lift on a circular cylinder: review and new measurements

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C. Norberg

01 Jan 2003-Journal of Fluids and Structures

TL;DR: In this article, the effects of Reynolds number in the nominal case of an infinitely long and non-confined cylinder in a smooth oncoming flow are discussed, from about Re = 47 to 2 x 10(5), i.e., from the onset of vortex shedding up to the end of the subcritical regime.

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939 citations

Journal Article•DOI•

Computational aeroacoustics: progress on nonlinear problems of sound generation

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Tim Colonius¹, Sanjiva K. Lele²•Institutions (2)

California Institute of Technology¹, Stanford University²

01 Aug 2004-Progress in Aerospace Sciences

TL;DR: A hierarchy of computational approaches that range from semi-empirical schemes that estimate the noise sources using mean-flow and turbulence statistics, to high-fidelity unsteady flow simulations that resolve the sound generation process by direct application of the fundamental conservation principles is discussed in this paper.

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520 citations

Journal Article•DOI•

Aerodynamics of high-speed railway train

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Raghu S. Raghunathan¹, H. D. Kim², Toshiaki Setoguchi³•Institutions (3)

Queen's University Belfast¹, Andong National University², Saga University³

01 Aug 2002-Progress in Aerospace Sciences

TL;DR: In this article, the state of the art on the aerodynamic and aeroacoustic problems of high-speed railway train and highlights proper control strategies to alleviate undesirable aerodynamic problems.

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446 citations

Journal Article•DOI•

Location and quantification of noise sources on a wind turbine

[...]

Stefan Oerlemans¹, Pieter Sijtsma¹, B. Méndez López•Institutions (1)

National Aerospace Laboratory¹

06 Feb 2007-Journal of Sound and Vibration

TL;DR: In this paper, a three-bladed wind turbine with a rotor diameter of 58m was used to characterize the noise sources and to verify whether trailing edge noise from the blades was dominant.

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410 citations

Cites background from "Mechanics of flow-induced sound and..."

...In the limit for low-frequency dipole noise, where the acoustic wavelength is much larger than the airfoil chord, the sin(2)(θ/2) term changes into sin(2)(θ) [5,33]....
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...For trailing edge noise, L is usually taken to be the boundary layer thickness at the trailing edge [5,6], although a recent study suggests that a constant reference length should be used [12]....
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...wind turbines, airplanes, helicopters, fans), the characteristics of airfoil noise have been investigated extensively in both experimental and theoretical studies [3-13]....
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...For inflow-turbulence noise radiated from the leading edge the θ-dependence is inverted [5,11] and θ should be replaced by (π-θ)....
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...2 Trailing edge bluntness noise When the trailing edge thickness of an airfoil is larger than about 20% of the boundary layer displacement thickness, trailing edge bluntness noise can occur [5,6,12]....
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