Experimental study on the effects of acoustic streaming of high frequency ultrasonic waves on convective heat transfer: Effects of transducer position and wave interference

Rahimi, Masoud; Dehbani, Maryam; Abolhasani, Mahdieh

doi:10.1016/j.icheatmasstransfer.2012.03.013

Cited by 59 publications

(7 citation statements)

References 20 publications

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“…Experimental and numerical studies in straight channels were also the subject of [33], but the authors did not take into account the heat transfer effect. In the work of Rahini et al [34] the experimental studies of the effects of 1.7 MHz high frequency ultrasound waves on convective heat transfer were investigated. The experiment was carried out in a metal cylinder with a relatively large diameter of 15 cm.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of Baroclinic Acoustic Streaming Phenomenon for Various Flow Parameters

et al. 2022

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The article presents a numerical study of the large-amplitude, acoustically-driven streaming flow for different frequencies of the acoustic wave and different temperature gradients between hot and cold surfaces. The geometries studied were mainly two-dimensional rectangular resonators of different lengths, but also one three-dimensional rectangular resonator and one long and narrow channel, representative of a typical U-shaped resistance thermometer. The applied numerical model was based on the Navier–Stokes compressible equations, the ideal gas model, and finite volume discretization. The oscillating wall of the considered geometries was modeled as a dynamically moving boundary of the numerical mesh. The length of the resonators was adjusted to one period of the acoustic wave. The research confirmed that baroclinic acoustic streaming flow was largely independent of frequency, and its intensity increased with the temperature gradient between the hot and cold surface. Interestingly, a slight maximum was observed for some oscillation frequencies. In the case of the long and narrow channel, acoustic streaming manifested itself as a long row of counter-rotating vortices that varied slightly along the channel. 3D calculations showed that a three-dimensional pair of streaming vortices had formed in the resonator. Examination of the flow in selected cross-sections showed that the intensity of streaming gradually decreased as it approached the side walls of the resonator creating a quasi-parabolic profile. The future development of the research will focus on fully 3D calculations and precise identification of the influence of the bounding walls on the streaming flow.

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Section: Introductionmentioning

confidence: 99%

Numerical Study of Baroclinic Acoustic Streaming Phenomenon for Various Flow Parameters

et al. 2022

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“…In another study, Rahimi et al. 66 found that a single transducer mounted on the side wall enhanced heat transfer more effectively than other arrangements. The influence of geometric structure on the enhanced heat transfer effect of ultrasound was examined in 67, 68.…”

Section: Ultrasonic Heat Transfer Enhancement Technologymentioning

confidence: 97%

Advances of Ultrasonic Scaling Removal Technology and Heat Transfer Enhancement Technology

Zhao

et al. 2021

ChemBioEng Reviews

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The presence of scale substances seriously affects the normal operation of industrial equipment. Ultrasonic scaling removal technology has been getting significant attention because of cleanliness, safety and no secondary pollution. As a new heat transfer enhancement technology, ultrasonic has also achieved good results. This article reviews the research progress and innovations made in recent years on the ultrasonic scaling removal technology and heat transfer enhancement technology. A special focus is concentrated on the influence of the key factors on the comprehensive performance. These factors include ultrasonic parameters, fluid parameters, geometry parameters. At present, ultrasonic heat transfer enhancement technology mainly stays in the laboratory research stage, and there is no industrial‐scale application.

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“…However, the convective effects of ultrasound are greatly reduced when the flow becomes turbulent, as the velocity profiles are not modified by the presence of 2 MHz ultrasound, and the turbulent kinetic energy does not increase substantially. As acoustic streaming is identified as the main heat transfer enhancement vector with high frequency ultrasound [13,31,32], dissipation of these convective effects results in an attenuation and cancellation of the heat transfer enhancement.…”

Section: Thermal Study In the Presence Of High Frequency Ultrasoundmentioning

confidence: 99%

Ultrasonically-enhanced convective heat transfer: Evidence of a relationship with the thermal boundary layer

Poncet

Ferrouillat

Vignal

et al. 2022

Applied Thermal Engineering

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Experimental study on the effects of acoustic streaming of high frequency ultrasonic waves on convective heat transfer: Effects of transducer position and wave interference

Cited by 59 publications

References 20 publications

Numerical Study of Baroclinic Acoustic Streaming Phenomenon for Various Flow Parameters

Numerical Study of Baroclinic Acoustic Streaming Phenomenon for Various Flow Parameters

Advances of Ultrasonic Scaling Removal Technology and Heat Transfer Enhancement Technology

Ultrasonically-enhanced convective heat transfer: Evidence of a relationship with the thermal boundary layer

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