Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/2794
Citations
Scopus Web of Science® Altmetric
?
?
Type: Journal article
Title: Influence of jet exit conditions on the passive scaler field of an axisymmetric free jet
Author: Mi, J.
Nobes, D.
Nathan, G.
Citation: Journal of Fluid Mechanics, 2001; 432:91-125
Publisher: Cambridge Univ Press
Issue Date: 2001
ISSN: 0022-1120
Statement of
Responsibility: 
J. Mi, D. S. Nobes and G. J. Nathan
Abstract: The influence of initial flow conditions on the passive scalar field of a turbulent free jet issuing from the round nozzle is investigated in this paper by a review of the literature and a detailed experimental study. Two sets of distinctly different initial conditions are generated using two nozzle types: a smooth contraction and a long straight pipe. The present measurements of the passive scalar (temperature) field were conducted in a slightly heated air jet from each nozzle at a Reynolds number of 16 000 using identical experimental facilities and a single measurement technique. Significant differences between the flows from the two nozzles are revealed throughout the measured flow region which covers the axial range from 0 to 70 jet exit diameters. The study suggests that the differences observed in the statistics of the scalar field may be related to differences in the underlying turbulence structure of the jet in the near field. The present findings support the analytical result of George (1989) that the entire flow is influenced by the initial conditions, resulting in a variety of self-similar states in the far field.
Rights: © 2001 Cambridge University Press
RMID: 0020010242
DOI: 10.1017/S0022112000003384
Published version: http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=78583&fulltextType=RA&fileId=S0022112000003384
Appears in Collections:Mechanical Engineering publications
Environment Institute Leaders publications

Files in This Item:
File Description SizeFormat 
Nat_inf_v4322001.pdfPublished version900.71 kBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.