Diffusion of a Brownian ellipsoid in a force field

Erik Aurell; Stefano Bo; Marcelo A. Dias; Ralf Eichhorn; Raffaele Marino

doi:10.1209/0295-5075/114/30005

Diffusion of a Brownian ellipsoid in a force field

Erik Aurell, Stefano Bo, Marcelo A. Dias, Ralf Eichhorn, Raffaele Marino

School of Engineering

Research output: Contribution to journal › Article › peer-review

Abstract / Description of output

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.

Original language	Undefined/Unknown
Pages (from-to)	30005
Number of pages	1
Journal	European Physical Society Letters (EPL)
Volume	114
Issue number	3
DOIs	https://doi.org/10.1209/0295-5075/114/30005
Publication status	Published - 1 May 2016

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10.1209/0295-5075/114/30005

https://iopscience.iop.org/article/10.1209/0295-5075/114/30005

Cite this

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title = "Diffusion of a Brownian ellipsoid in a force field",

abstract = "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.",

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AU - Aurell, Erik

AU - Bo, Stefano

AU - Dias, Marcelo A.

AU - Eichhorn, Ralf

AU - Marino, Raffaele

PY - 2016/5/1

Y1 - 2016/5/1

N2 - 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.

AB - 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.

U2 - 10.1209/0295-5075/114/30005

DO - 10.1209/0295-5075/114/30005

M3 - Article

SN - 0295-5075

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JO - European Physical Society Letters (EPL)

JF - European Physical Society Letters (EPL)

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