Mean and variance of the velocity of solid particles in turbulence

Nielsen, Peter (2009). Mean and variance of the velocity of solid particles in turbulence. In: Bernard J. Geurts, Herman Clercx and Wim Uijttewaal, Particle-Laden Flow: From Geophysical to Kolmogorov Scales. EUROMECH Colloquium on Particle-Laden Flow, Enschede, Netherlands, (385-391). 21-23 June 2006. doi:10.1007/978-1-4020-6218-6


Author Nielsen, Peter
Title of paper Mean and variance of the velocity of solid particles in turbulence
Conference name EUROMECH Colloquium on Particle-Laden Flow
Conference location Enschede, Netherlands
Conference dates 21-23 June 2006
Proceedings title Particle-Laden Flow: From Geophysical to Kolmogorov Scales
Journal name Particle-Laden Flow: From Geophysical to Kolmogorov Scales
Place of Publication Dordrecht , Netherlands
Publisher Springer
Publication Year 2009
Year available 2007
Sub-type Fully published paper
DOI 10.1007/978-1-4020-6218-6
Open Access Status
ISBN 9781402062179
ISSN 2215-1826
Editor Bernard J. Geurts
Herman Clercx
Wim Uijttewaal
Volume 11
Start page 385
End page 391
Total pages 7
Language eng
Abstract/Summary Even the simplest velocity statistics, i. e., the mean and the variance for particles moving in turbulence still offer challenges. This paper offers simple conceptual models/explanations for a couple of the most intriguing observations, namely, the enhanced settling rate in strong turbulence and the reduced Lagrangian velocity variance for even the smallest of sinking particles. While simultaneous experimental observation of the two effects still do not exist, we draw parallels between two classical sets of experiments, each exhibiting one, to argue that they are two sides of the same phenomenon: Selective sampling due to particle concentration on fast tracks like those illustrated by Maxey & Corrsin (1986).
Keyword Engineering, Environmental
Engineering, Mechanical
Engineering
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Conference Paper
Sub-type: Particle-Laden Flow: From Geophysical to Kolmogorov Scales
Collection: School of Civil Engineering Publications
 
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Created: Sat, 19 Mar 2011, 02:24:01 EST by Jeannette Watson on behalf of School of Civil Engineering