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The effect of the Basset history force on particle clustering in homogeneous and isotropic turbulence
KTH, School of Engineering Sciences (SCI), Mechanics. KTH, Centres, SeRC - Swedish e-Science Research Centre. KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW.
KTH, School of Engineering Sciences (SCI), Mechanics. KTH, Centres, SeRC - Swedish e-Science Research Centre. KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW.ORCID iD: 0000-0002-9172-6311
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2014 (English)In: Physics of fluids, ISSN 1070-6631, E-ISSN 1089-7666, Vol. 26, no 4, 041704- p.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, 041704- p.
Keyword [en]
Reynolds-Number, Heavy-Particles, Flow, Velocity, Acceleration, Combustion, Simulation, Motion, Sphere
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URN: urn:nbn:se:kth:diva-147066DOI: 10.1063/1.4871480ISI: 000336152700004Scopus ID: 2-s2.0-84904185291OAI: oai:DiVA.org:kth-147066DiVA: diva2:728939
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Swedish e‐Science Research Center
Note

QC 20140625

Available from: 2014-06-25 Created: 2014-06-23 Last updated: 2017-12-05Bibliographically approved

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Sardina, GaetanoBrandt, Luca

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Picano, FrancescoSardina, GaetanoBrandt, Luca
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MechanicsSeRC - Swedish e-Science Research CentreLinné Flow Center, FLOW
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