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Transverse jets and jet flames. Part 1. Scaling laws for strong transverse jets

Published online by Cambridge University Press:  25 September 2001

ERNEST F. HASSELBRINK  and
M. G. MUNGAL
ERNEST F. HASSELBRINK
Affiliation:
Mechanical Engineering Department, Stanford University, Stanford, CA 94305-3032, USA Present address: Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48109-2121, USA.
M. G. MUNGAL
Affiliation:
Mechanical Engineering Department, Stanford University, Stanford, CA 94305-3032, USA
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Abstract

We present a similarity analysis of strong turbulent jets directed perpendicularly into a crossflow. The analysis neglects pressure terms in the governing equations, and assumes complete similarity in each of two intermediate-asymptotic regions of the flow: a jet region, where the jet is largely unaffected by the crossflow, and a wake-like region, where the jet has been deflected well into the crossflow. Scaling laws are derived for velocity, scalar concentration, and jet trajectory, and show good agreement with existing experimental data. The structure of the counter-rotating vortex pair implied by this analysis is significantly different from typical representations found in the literature.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 443 , 25 September 2001 , pp. 1 - 25
Copyright
© 2001 Cambridge University Press

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