Particulate aggregation through a modulated annular one-dimensional acoustic field at resonant frequencies

Qiao, Zhenghui; Pan, Xiaojun; Liang, Shaohua; Bi, Xiaolong; Wang, Juan; Xie, Wei; Wang, Kang; Wang, Yanwen; Fang, Jun; Zhu, Xujun; Sun, Shaoxin; Li, Shaohui

doi:10.1016/j.partic.2020.11.009

Cited by 6 publications

(3 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On much larger scales, differences in acoustic contrast Φ together with ultrasound-generated attractions between particles have been applied for the separation and aggregation of food particles in liquids or solid/liquid mixtures [260,261] as well as for stratification of sludge particles during ultrasound-assisted hot air convective drying [262] (figure 7(d)). Another such 'megasonic' application has been for the large scale accumulation and aggregation of aerosol particles to aid their collection and removal [263,264].…”

Section: Applicationsmentioning

confidence: 99%

Acoustic manipulation of multi-body structures and dynamics

Lim,

VanSaders,

Jaeger

2024

Rep. Prog. Phys.

View full text Add to dashboard Cite

Sound can exert forces on objects of any material and shape. This has made the contactless manipulation of objects by intense ultrasound a fascinating area of research with wide-ranging applications. While much is understood for acoustic forcing of individual objects, sound-mediated interactions among multiple objects at close range gives rise to a rich set of structures and dynamics that are less explored and have been emerging as a frontier for research. We introduce the basic mechanisms giving rise to sound-mediated interactions among rigid as well as deformable particles, focusing on the regime where the particles’ size and spacing are much smaller than the sound wavelength. The interplay of secondary acoustic scattering, Bjerknes forces, and micro-streaming is discussed and the role of particle shape is highlighted. Furthermore, we present recent advances in characterizing non-conservative and non-pairwise additive contributions to the particle interactions, along with instabilities and active fluctuations. These excitations emerge at sufficiently strong sound energy density and can act as an effective temperature in otherwise athermal systems.

show abstract

Section: Applicationsmentioning

confidence: 99%

Acoustic manipulation of multi-body structures and dynamics

Lim,

VanSaders,

Jaeger

2024

Rep. Prog. Phys.

View full text Add to dashboard Cite

show abstract

“…HSS consisted of speaker and HR has been widely utilized (Cheng et al, 2016;Qiao et al, 2014Qiao et al, , 2015Qiao et al, , 2017Qiao et al, , 2018aQiao et al, , 2018bQiao et al, , 2020Qiao et al, , 2021. It belongs to one novel type of energy conservation device with high sound pressure output.…”

Section: Introductionmentioning

confidence: 99%

“…Its wave-amplification mechanism has special advantage in acoustic fine-particles aggregation, deposition, manipulation, and removal (Andrade 1931;Brandt 2001;Melde et al, 2016;Neild 2016;Qiao et al, 2015Qiao et al, , 2017. It should be noted that the sonic fine-particles removal belongs to the acoustic-fluid-particulatesvibration system of a more complex large-scale vibration control (Fan et al, 2019;Qiao et al, 2021). Compared to the high power consumption generally required by a high sound pressure amplitude output, the resonance amplification effect of HSS on the acoustic wave has important value in the vibration control with a large amplitude wave.…”

Section: Introductionmentioning

confidence: 99%

Theoretical model and dynamic wave-amplification effect of the high intensity Helmholtz sound source

Qiao

Cheng

Jin

2021

Journal of Vibration and Control

Self Cite

View full text Add to dashboard Cite

Helmholtz sound source consists of Helmholtz resonator and speaker and belongs to a new type of high-intensity sound source. It has potential industrial advantage in the aerodynamic acoustic application for the large amplitude wave. Based on the lumped parameter principle of acoustic impedance, an acoustic theoretical model is suggested. The model reveals the amplification regulation of the sound source on the acoustic wave. Through the acoustic theoretical computation, a dynamic amplification and an amplification limitation are analyzed. The wave-amplification effect attributes to the parameter regulation of the macro, micro, and dynamic-varied sizes of the sound source. The repetitive motion of the vibrating membrane of speaker causes three working states of balance, squeeze, and stretch. The three states act as specific boundary conditions and demonstrate as three different theoretical curves. The theoretical boundary curves codetermine an experimental curve, which essentially limits the practical amplification effect. Nevertheless, the amplification gain of sound pressure amplitude reaches up to 1.8 times, and the potential maximum amplitude reaches up to 3600 Pa (164 dB). The two quantitative characteristics indicate the maximum capability of the sound source on wave-amplification effect. The control sensitivity of the complicated impedance parameters on wave amplification is 0.26 Pa/Hz. The acoustic theoretical model is valuable in the series aspects of the industrial design, manufacture, and application of the sound source. Especially, the theoretical innovation lays the foundation of solid to these aspects.

show abstract