Results 161 to 170 of about 8,061 (188)
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Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1954
Abstract It has been suggested by Eckart (1948), Liebermann (1949) and others that measurement of acoustic streaming in a fluid provides an independent means of evaluating the ratio of the second coefficient of viscosity to the coefficient of shear viscosity.
J. E. Piercy, J. Lamb
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Abstract It has been suggested by Eckart (1948), Liebermann (1949) and others that measurement of acoustic streaming in a fluid provides an independent means of evaluating the ratio of the second coefficient of viscosity to the coefficient of shear viscosity.
J. E. Piercy, J. Lamb
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Effect of acoustic streaming on ultrasonic heating
Ultrasound in Medicine & Biology, 1994It was found in in vitro experiments performed on tissue phantoms that acoustic streaming in low attenuating fluid may dramatically reduce the temperature rise generated by ultrasound at the surface of bone, if the ultrasound path contains a low-attenuating-fluid/thin-soft-tissue/bone structure.
J, Wu, A J, Winkler, T P, O'Neill
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Modeling of acoustic streaming in viscoelastic fluids
2017 IEEE SENSORS, 2017Acoustic streaming is a promising way for transporting fluid or particles suspended in a fluid in lab-on-a-chip devices and microfluidics in general. In literature usually water is considered as the working medium. In this contribution we present a framework based on perturbation theory, which implements viscoelastic fluid behavior to the acoustic ...
Marcus A. Hintermüller +2 more
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Applications of Acoustic Streaming
2014In this chapter, we provide a qualitative description of acoustic streaming and review its applications in lab-on-a-chip devices. It covers boundary layer driven streaming, including Schlichting and Rayleigh streaming, Eckart streaming in the bulk fluid, cavitation microstreaming and surface-acousticwave- driven streaming.
Roy Green, Mathias Ohlin, Martin Wiklund
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International Journal of Non-Linear Mechanics, 2008
Abstract The phenomenon of secondary motion (acoustic streaming) created by the oscillation of a fluid past a sphere is investigated through numerically solving the full Navier–Stokes equations. The main parameters that affect the structure of acoustic streaming are Reynolds number and Strouhal number.
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Abstract The phenomenon of secondary motion (acoustic streaming) created by the oscillation of a fluid past a sphere is investigated through numerically solving the full Navier–Stokes equations. The main parameters that affect the structure of acoustic streaming are Reynolds number and Strouhal number.
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Chaotic mixing generated by acoustic streaming
Ultrasonics, 2002The acoustic mixer presented in this paper is a closed cylinder containing chemical solutions. The ultrasound was generated in a water bath outside of the cylinder. The mixing efficiency was measured by using a laser-photodiode system and by mixing iodine and sodium thiosulfate.
C, Suri +4 more
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The Journal of the Acoustical Society of America
In recent years, the need for accurate analysis of acoustic streaming has become urgent, as classical methods fail to quantify flows generated by acoustic waves beyond a few hundred kHz. This problem, identified since Lighthill’s seminal 1978 namesake publication, remains unresolved.
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In recent years, the need for accurate analysis of acoustic streaming has become urgent, as classical methods fail to quantify flows generated by acoustic waves beyond a few hundred kHz. This problem, identified since Lighthill’s seminal 1978 namesake publication, remains unresolved.
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Quantum mechanical representation of acoustic streaming and acoustic radiation pressure
Physical Review E, 2001We discuss acoustic streaming and acoustic radiation pressure from the viewpoint of energy and momentum of acoustic waves, using a quantum mechanical representation of acoustic waves. We represent the energy epsilon and momentum mu of acoustic waves as epsilon=n(p)homega and mu=n(p)hk; here n(p) is the phonon density, omega is the frequency, k is the ...
M, Sato, T, Fujii
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Acoustic Bubbles, Acoustic Streaming, and Cavitation Microstreaming
2015The phenomena of acoustic streaming and cavitation microstreaming can seem very complex, but underpinning them are fundamental concepts of fluid dynamics that are common to many similar systems. In this chapter, key aspects of fluid dynamics leading to bubble acoustics, acoustic streaming, and microstreaming are outlined.
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