To the top

Page Manager: Webmaster
Last update: 9/11/2012 3:13 PM

Tell a friend about this page
Print version

Preferential Sampling and… - University of Gothenburg, Sweden Till startsida
Sitemap
To content Read more about how we use cookies on gu.se

Preferential Sampling and Small-Scale Clustering of Gyrotactic Microswimmers in Turbulence

Journal article
Authors Kristian Gustavsson
Fanny Berglund
Per R. Jonsson
Bernhard Mehlig
Published in Physical Review Letters
Volume 116
Issue 10
ISSN 0031-9007
Publication year 2016
Published at Department of Physics (GU)
Language en
Links dx.doi.org/10.1103/PhysRevLett.116....
Keywords Turbulence; Down-welling; Fluid velocities; Gravitational torque; Motile micro-organisms; Preferential samplings; Small scale; Spatial clustering; Statistical modeling; Sampling
Subject categories Oceanography, Hydrology, Water Resources, Fluid Mechanics and Acoustics, Geophysical Engineering

Abstract

Recent studies show that spherical motile microorganisms in turbulence subject to gravitational torques gather in down-welling regions of the turbulent flow. By analyzing a statistical model we analytically compute how shape affects the dynamics, preferential sampling, and small-scale spatial clustering. We find that oblong organisms may spend more time in up-welling regions of the flow, and that all organisms are biased to regions of positive fluid-velocity gradients in the upward direction. We analyze small-scale spatial clustering and find that oblong particles may either cluster more or less than spherical ones, depending on the strength of the gravitational torques. © 2016 American Physical Society.

Page Manager: Webmaster|Last update: 9/11/2012
Share:

The University of Gothenburg uses cookies to provide you with the best possible user experience. By continuing on this website, you approve of our use of cookies.  What are cookies?