Aerosol manipulation by acoustic tunable phase-control at resonant frequency

Qiao, Zhenghui; Huang, Yaji; Naso, Vincenzo; Dong, Wei

doi:10.1016/j.powtec.2015.04.081

Cited by 9 publications

(8 citation statements)

References 31 publications

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“…refer to [8], [9], [16], [17]. Due to the acoustic radiation force exerting on aerosols in waveguide, the aerosols in the regions closed to the nodes of ASW field are driven to the regions closed to the contiguous anti-nodes.…”

Section: Journal Of Clean Energy Technologies Vol 5 No 2 March 2017mentioning

confidence: 99%

“…In the current studies [7]- [9], [11], [15], the acoustic resonance design of aerosol manipulation device is generally used to generate high sound pressure without high energy consumption based on the impendence matching characteristic [15] between device and air. The corresponding resonance type generally focuses on the unique one-dimension harmonic waveguide [7], [11], [15].…”

Section: Introductionmentioning

confidence: 99%

“…Base on our previous study [9], [10], we propose a new twin type of acoustic resonances (TTAR) with low energy consumption to be used to aerosol manipulation. It is well known that the waveguide has dual kinds of function, one for constructing acoustic field and the other for containing and manipulating aerosols.…”

Section: Introductionmentioning

confidence: 99%

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The Advantage of Aerosol Manipulation by Twin Types of Acoustic Resonances

Qiao¹,

Huang²,

Naso³

et al. 2017

JOCET

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Abstract-In order to make full use of the potential advantage of the multiple type of acoustic resonance, twin types of acoustic resonances (TTAR) are proposed to construct acoustic resonant device for manipulating aerosols with low energy consumption for acoustic source. The TTAR is realized by the frequency coupling between the Helmholtz resonator and the harmonic waveguide. The TTAR consists of the 1 st type of resonance based on the Helmholtz resonator and the 2 nd type of resonance based on the harmonic waveguide. The sound pressure generated at resonance frequency 1268Hz caused by the 1st type of resonance is amplified 1.8 times comparing to that caused by the acoustic source without the 1st type of resonance. The peak sound pressure caused by TTAR is amplified 1.1 times than that caused by the single type of acoustic resonance based on the harmonic waveguide. The variation of sound pressure distribution for the TTAR and the STAR has the same regulation; however, the former peak sound pressure is much larger than the later at the same energy consumption for acoustic source. Especially, benefit from this advantage, the aerosols and the air medium in waveguide are separated by TTAR in the finite space within waveguide.

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Section: Journal Of Clean Energy Technologies Vol 5 No 2 March 2017mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Advantage of Aerosol Manipulation by Twin Types of Acoustic Resonances

Qiao¹,

Huang²,

Naso³

et al. 2017

JOCET

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“…Kordík et al [28] (2017) also estimated momentum fluxes as a function of the ratio between the driver and the nozzle diameters. The external flow of synthetic jets has been used in several applications such as active flow control [8], design of heat sinks [56], electronic cooling [53], mixing control [57], air [58], and underwater propulsion [45], aerosol manipulation [59], and flow separation control [51]. Reports of synthetic jet devices with cavities of different volumes are in the literature for such applications.…”

Section: Introductionmentioning

confidence: 99%

Momentum transfer in the outflow cycle of a Synthetic jet: Comparison between a developed flow and an LE model

Hernández-Sánchez¹,

Orduña‐Bustamante²,

Velasco-Segura³

2021

Preprint

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In the literature, flows produced by synthetic jets (SJ) have been studied extensively through experiments and numeric simulations. The essential physics of such a complex system has been simplified successfully to Lumped-element models in a wide range of conditions. LE models effectively predict the pressure in the cavity and the velocity in the neck of SJ. But, this does not comprise the complete dynamics of SJ. As soon as the flow starts separating from the neck of the SJ device, vortices and jets form at some distance downstream. These structures are the result of loosening the flow boundaries. Despite such a dramatic change, predictions of LE models remain unverified by measurements of the fully developed jet. We compared predictions of momentum transfer using an LE model with measurements of size and velocity of a fully developed jet/vortex detached from an SJ. Our SJ device operated with air as an active fluid. Comparing measurements and predictions, we found a constant difference for the higher sound pressures. However, the predictions and the measurements follow similar trends. Additionally, we found that the decay rate of the flow regime given by the relationship between the Reynolds and the Strouhal numbers differs significantly when the flow is studied within the neck and downstream the cavity.

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“…Many devices that rely on the acoustic manipulation of particles employ bulk acoustic standing waves, which are obtained in a resonating device that supports spatially fixed nodes and antinodes throughout the fluid medium . Such devices have been used to manipulate particles to generate complex designs in multiple dimensions, to trap cells and particles in well‐defined spatial regions, and to separate particles, e.g., cancer cells from blood or solid particles from smoke …”

Section: Introductionmentioning

confidence: 99%

The Limits of Primary Radiation Forces in Bulk Acoustic Standing Waves for Concentrating Nanoparticles

Reyes

Suthanthiraraj

et al. 2018

Part & Part Syst Charact

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Acoustic waves are increasingly used to concentrate, separate, and pattern nanoparticles in liquids, but the extent to which nanoparticles of different size and composition can be focused is not well‐defined. This article describes a simple analytical model for predicting the distribution of nanoparticles around the node of a 1D bulk acoustic standing wave over time as a function of pressure amplitude, acoustic contrast factor (i.e., nanoparticle and fluid composition), and size of the nanoparticles. Predictions from this model are systematically compared to results from experiments on gold nanoparticles of different sizes to determine the model's accuracy in estimating both the rate and the degree of nanoparticle focusing across a range of pressure amplitudes. The model is further used to predict the minimum particle size that can be focused for different nanoparticle and fluid compositions, and those predictions are tested with gold, silica, and polystyrene nanoparticles in water. A procedure combining UV‐light and photoacid is used to induce the aggregation of nanoparticles to illustrate the effect of nanoparticle aggregation on the observed degree of acoustic focusing. Overall, these findings clarify the extent to which acoustic resonating devices can be used to manipulate, pattern, and enrich nanoparticles suspended in liquids.

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Aerosol manipulation by acoustic tunable phase-control at resonant frequency

Cited by 9 publications

References 31 publications

The Advantage of Aerosol Manipulation by Twin Types of Acoustic Resonances

The Advantage of Aerosol Manipulation by Twin Types of Acoustic Resonances

Momentum transfer in the outflow cycle of a Synthetic jet: Comparison between a developed flow and an LE model

The Limits of Primary Radiation Forces in Bulk Acoustic Standing Waves for Concentrating Nanoparticles

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