Micro-capsule trapping and destruction in an acoustic standing wave

2005 ◽  
Author(s):  
Daisuke Koyama
Keyword(s):  
Standing Wave ◽  
Acoustic Standing Wave

scholarly journals Analysis of the effects of acoustic levitation to simulate the microgravity environment on the development of early zebrafish embryos

RSC Advances ◽  
2020 ◽  
Vol 10 (72) ◽  
pp. 44593-44600
Author(s):  
Li Li ◽  
Ning Gu ◽  
Huijuan Dong ◽  
Bingsheng Li ◽  
Kenneth T. V. G.
Keyword(s):  
Wave Field ◽  
Standing Wave ◽  
Development Stage ◽  
Microgravity Environment ◽  
Acoustic Levitation ◽  
Zebrafish Embryos ◽  
Acoustic Standing Wave ◽  
Standing Wave Field

Influence of acoustic standing wave field creating acoustic levitation, on each development stage of early zebrafish embryos has been studied.

Effect of the Separation Distance on the Aeroacoustic Source of Multiple Shallow Cavities

2018 ◽  
Vol 141 (1) ◽  
Author(s):  
Ayman A. Shaaban ◽  
Samir Ziada
Keyword(s):  
Standing Wave ◽  
Separation Distance ◽  
Destructive Interference ◽  
Acoustic Standing Wave ◽  
Separation Ratio ◽  
Sound Levels ◽  
Standing Wave Method ◽  
Image Velocimetry ◽  
Strong Source ◽  
Shallow Cavities

Flow over ducted shallow cavities can excite fluid resonant oscillations. A common industrial application is the flow in corrugated pipes that can be modeled as a series of consecutive shallow cavities. In the current study, the effect of the separation distance on the aeroacoustic source of multiple shallow cavities is investigated. The standing wave method (SWM) is used to measure the source, where multiple microphones reconstruct the acoustic standing wave upstream and downstream of the cavities. The effect of the ratio between the separation distance to cavity length is investigated for a practical range from 0.5 to 1.375 for two- and three-cavity configurations. At low and intermediate sound levels, constructive hydrodynamic interference, resulting in a strong source, is observed for the extremum spacing ratios of 0.5 and 1.375. However, at high excitation levels, 10% and higher, the source, slightly but consistently, decreases upon increasing the separation ratio. These trends persist for both the double- and triple-cavity configurations. On the other hand, the separation distance of destructive interference is found to depend on the number of cavities of the tested configuration. Particle image velocimetry (PIV) measurements of the constructive interference cases show strong synchronized vorticity shedding in all cavities. Each cavity contribution to the total aeroacoustic source is then examined by means of Howe's analogy, and the percentage contribution of each cavity is found to depend on the excitation level.

Agglomerate fragmentation in high-intensity acoustic standing wave fields

2016 ◽  
Vol 291 ◽  
pp. 214-222 ◽  
Author(s):  
Claas Knoop ◽  
Zinaida Todorova ◽  
Jürgen Tomas ◽  
Udo Fritsching
Keyword(s):  
Standing Wave ◽  
High Intensity ◽  
Wave Fields ◽  
Acoustic Standing Wave

scholarly journals Measurements of the force fields within an acoustic standing wave using holographic optical tweezers

2014 ◽  
Vol 104 (16) ◽  
pp. 163504 ◽  
Author(s):  
P. G. Bassindale ◽  
D. B. Phillips ◽  
A. C. Barnes ◽  
B. W. Drinkwater
Keyword(s):  
Standing Wave ◽  
Optical Tweezers ◽  
Force Fields ◽  
Acoustic Standing Wave ◽  
Holographic Optical Tweezers
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