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Collisional damping of spherical ice particles
Department of Chemistry and Chemical Engineering, Chalmers University of Technology, SE-41296 Gothenburg, Sweden. Contamination and Core CFD, Volvo Car Corporation, SE-40531 Gothenburg, Sweden.
Department of Chemistry & Molecular Biology, Atmospheric Science, University of Gothenburg, SE-41296 Gothenburg, Sweden.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.ORCID iD: 0000-0001-5012-0009
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.ORCID iD: 0000-0001-8225-989X
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2021 (English)In: Powder Technology, ISSN 0032-5910, E-ISSN 1873-328X, Vol. 383, p. 318-327Article in journal (Refereed) Published
Abstract [en]

This paper presents experimental values for the coefficient of restitution (en) for millimeter-sized ice particles colliding with massive walls at different temperatures. Three different wall materials are tested: hardened glass, ice and Acrylonitrile butadiene styrene (ABS) polymer. The results show a high sensitivity to impact velocity Vi, where en decreases rapidly with increasing Vi. The results also show a decrease in en with increasing temperature T. A novel model that predicts en based on the assumption of collisional melting and viscous damping caused by an increased premelted liquid-layer, is proposed. The model predicts both the velocity and the temperature trends seen in the experiments. The difference obtained in experiments between wall materials is also captured by the new model. A generalized regime map for ice particle collisions is proposed to combine the new model with previous work.

Place, publisher, year, edition, pages
Elsevier, 2021. Vol. 383, p. 318-327
National Category
Applied Mechanics
Research subject
Experimental Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-82745DOI: 10.1016/j.powtec.2021.01.025ISI: 000631782500007Scopus ID: 2-s2.0-85100690717OAI: oai:DiVA.org:ltu-82745DiVA, id: diva2:1524772
Funder
Vinnova, 2017-03029Swedish Research Council Formas, 2017-00564Swedish Research Council, 2020-03497
Note

Validerad;2021;Nivå 2;2021-02-22 (alebob);

Finansiär: Swedish Strategic Research Area MERGE

Available from: 2021-02-02 Created: 2021-02-02 Last updated: 2023-09-05Bibliographically approved

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Sollén, SofiaCasselgren, Johan

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