Velocity Derivative Skewness in Isotropic Turbulence and its Measurement with Hot Wires

Burattini, P., Lavoie, P. and Antonia, R. A. (2007). Velocity Derivative Skewness in Isotropic Turbulence and its Measurement with Hot Wires. In: Peter Jacobs, Tim McIntyre, Matthew Cleary, David Buttsworth, David Mee, Rose Clements, Richard Morgan and Charles Lemckert, 16th Australasian Fluid Mechanics Conference (AFMC). 16th Australasian Fluid Mechanics Conference (AFMC), Gold Coast, Queensland, Australia, (287-290). 3-7 December, 2007.

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Author Burattini, P.
Lavoie, P.
Antonia, R. A.
Title of paper Velocity Derivative Skewness in Isotropic Turbulence and its Measurement with Hot Wires
Conference name 16th Australasian Fluid Mechanics Conference (AFMC)
Conference location Gold Coast, Queensland, Australia
Conference dates 3-7 December, 2007
Proceedings title 16th Australasian Fluid Mechanics Conference (AFMC)
Place of Publication Brisbane, Australia
Publisher School of Engineering, The University of Queensland
Publication Year 2007
Year available 2007
Sub-type Fully published paper
ISBN 978-1-864998-94-8
Editor Peter Jacobs
Tim McIntyre
Matthew Cleary
David Buttsworth
David Mee
Rose Clements
Richard Morgan
Charles Lemckert
Start page 287
End page 290
Total pages 4
Collection year 2007
Language eng
Abstract/Summary We investigate the effect of the hot wire resolution on measurements of the velocity derivative skewness in homogeneous isotropic turbulence. A single wire configuration (with different lengths and temporal sampling resolutions) is considered. Estimates of the attenuation, based on numerical data in box turbulence, are applied to experimental data taken in grid turbulence. It is found that the sampling resolution has a sizeable attenuation effect, while the length of the wire has a relatively minor impact. The corrected experimental values support the conclusion that the skewness is constantwith the Reynolds number, in agreement with Kolmogorov’s 41 theory.
Subjects 290501 Mechanical Engineering
290200 Aerospace Engineering
290800 Civil Engineering
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status Unknown

 
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Created: Tue, 18 Dec 2007, 16:24:04 EST by Laura McTaggart on behalf of School of Engineering