Scaling the inner region of turbulent plane wall jets

Scaling the inner region of turbulent plane wall jets The present study reports refined laser Doppler anomemetry measurements in a turbulent plane wall jet. The Reynolds numbers based on jet exit conditions are in the range 7,500<Re (=U j b/ν)<14,000. The skin friction velocities were determined from the velocity gradient in the linear viscous sublayer or by fitting a fifth-order polynomial to the data in the near-wall region. The results show that a turbulent wall jet has a universal inner region that is identical to a turbulent boundary layer. It is also shown that the composite velocity profile proposed by other researchers for a turbulent wall jet can be used to model the inner region of the wall jet. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Experiments in Fluids Springer Journals

Scaling the inner region of turbulent plane wall jets

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Publisher
Springer-Verlag
Copyright
Copyright © 2002 by Springer-Verlag
Subject
Engineering; Engineering Fluid Dynamics; Fluid- and Aerodynamics; Engineering Thermodynamics, Heat and Mass Transfer
ISSN
0723-4864
eISSN
1432-1114
D.O.I.
10.1007/s00348-002-0451-6
Publisher site
See Article on Publisher Site

Abstract

The present study reports refined laser Doppler anomemetry measurements in a turbulent plane wall jet. The Reynolds numbers based on jet exit conditions are in the range 7,500<Re (=U j b/ν)<14,000. The skin friction velocities were determined from the velocity gradient in the linear viscous sublayer or by fitting a fifth-order polynomial to the data in the near-wall region. The results show that a turbulent wall jet has a universal inner region that is identical to a turbulent boundary layer. It is also shown that the composite velocity profile proposed by other researchers for a turbulent wall jet can be used to model the inner region of the wall jet.

Journal

Experiments in FluidsSpringer Journals

Published: Aug 5, 2002

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