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Diffusion of a Brownian ellipsoid in a force field
KTH, School of Computer Science and Communication (CSC), Computational Science and Technology (CST).
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2016 (English)In: Europhysics letters, ISSN 0295-5075, E-ISSN 1286-4854, Vol. 114, no 3, 30005Article in journal (Refereed) PublishedText
Abstract [en]

We calculate the effective long-term convective velocity and dispersive motion of an ellipsoidal Brownian particle in three dimensions when it is subjected to a constant external force. This long-term motion results as a "net" average behavior from the particle rotation and translation on short time scales. Accordingly, we apply a systematic multi-scale technique to derive the effective equations of motion valid on long times. We verify our theoretical results by comparing them to numerical simulations.

Place, publisher, year, edition, pages
2016. Vol. 114, no 3, 30005
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-190517DOI: 10.1209/0295-5075/114/30005ISI: 000379522200005ScopusID: 2-s2.0-84975842477OAI: oai:DiVA.org:kth-190517DiVA: diva2:953307
Funder
Swedish Research Council, 621-2012-2982Swedish Research Council, 621-2013-3956
Note

QC 20160817

Available from: 2016-08-17 Created: 2016-08-12 Last updated: 2016-08-17Bibliographically approved

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Aurell, ErikBo, StefanoEichhorn, Ralf
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