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Estimation of acous...
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Imani Jajarmi, Ramin,1987-KTH,Mekanik
(author)
Estimation of acoustic forces on submicron aerosol particles in a standing wave field
- Article/chapterEnglish2018
Publisher, publication year, extent ...
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2017-10-26
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Taylor and Francis Inc.2018
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printrdacarrier
Numbers
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LIBRIS-ID:oai:DiVA.org:kth-223182
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https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-223182URI
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https://doi.org/10.1080/02786826.2017.1383968DOI
Supplementary language notes
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Language:English
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Summary in:English
Part of subdatabase
Classification
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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QC 20240110
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The net acoustic force acting on submicron particles suspended in a gas and exposed to a standing wave field is investigated as a function of particle size, by measuring both the aerosol number density and size distribution in a flow-through resonator. By taking into account all contributions relevant to the net force, this experimental study provides a first estimate for the acoustic radiation force in a size range where molecular effects are expected to be significant. The experiment consists of an electrostatic transducer generating a standing wave in the 50–80 kHz frequency range, with the submicron aerosol particles concentrated at pressure antinodes located across the height of a rectangular channel. A section of the flow is sampled isokinetically and analyzed using a Scanning Mobility Particle Sizer (SMPS), while the nodal patterns are visualized simultaneously using light scattering. The net acoustic force is calculated from their measured displacement along the axis of the 1D standing wave field. The component of this force resulting from radiation pressure is estimated by subtracting contributions from other forces. The results provide the first experimental estimation of the size dependence of the acoustic contrast factor for submicron aerosol particles, demonstrating the possibility of performing acoustic separation for diameters as small as 150 nm.
Subject headings and genre
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TEKNIK OCH TEKNOLOGIER Maskinteknik hsv//swe
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ENGINEERING AND TECHNOLOGY Mechanical Engineering hsv//eng
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Aerosols
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Atmospheric movements
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Elastic waves
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Light scattering
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Particle size
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Radiation effects
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Shape memory effect
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Acoustic radiation force
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Acoustic separation
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Electrostatic transducers
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Experimental estimations
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Rectangular channel
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Scanning mobility particle sizer
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Standing-wave field
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Sub-micron particles
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Acoustics
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aerosol
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Article
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conceptual framework
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force
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priority journal
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radiation
Added entries (persons, corporate bodies, meetings, titles ...)
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Robert, EtienneKTH,Mekanik,Polytechnique Montreal, Department of Mechanical Engineering, Montreal, Quebec, Canada(Swepub:kth)u1keoaph
(author)
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KTHMekanik
(creator_code:org_t)
Related titles
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In:Aerosol Science and Technology: Taylor and Francis Inc.52:1, s. 57-680278-68261521-7388
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