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The effect of the Basset history force on particle clustering in homogeneous and isotropic turbulence
Stockholm University, Faculty of Science, Department of Meteorology . Royal Institute of Technology .
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Number of Authors: 52014 (English)In: Physics of fluids, ISSN 1070-6631, E-ISSN 1089-7666, Vol. 26, no 4, p. 041704-Article in journal (Refereed) Published
Abstract [en]

We study the effect of the Basset history force on the dynamics of small particles transported in homogeneous and isotropic turbulence and show that this term, often neglected in previous numerical studies, reduces the small-scale clustering typical of inertial particles. The contribution of this force to the total particle acceleration is, on average, responsible for about 10% of the total acceleration and particularly relevant during rare strong events. At moderate density ratios, i.e., sand or metal powder in water, its presence alters the balance of forces determining the particle acceleration.

Place, publisher, year, edition, pages
2014. Vol. 26, no 4, p. 041704-
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Physical Sciences
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URN: urn:nbn:se:su:diva-105242DOI: 10.1063/1.4871480ISI: 000336152700004OAI: oai:DiVA.org:su-105242DiVA, id: diva2:731490
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AuthorCount:5;

Available from: 2014-07-01 Created: 2014-06-24 Last updated: 2017-12-05Bibliographically approved

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