Effect of large-scale intermittency and mean shear on scaling-range exponents in a turbulent jet

dc.contributor.author	Mi, Jianchun	en
dc.contributor.author	Antonia, R. A.	en
dc.contributor.school	School of Mechanical Engineering	en
dc.date.issued	2001	en
dc.description.abstract	The present study investigates the combined impact of the intermittency associated with the turbulent-nonturbulent interface and the mean shear rate in an axisymmetric jet on the structure of turbulence in the scaling range, where the spectrum exhibits a power-law behavior. Second-order structure functions, autocorrelations of the dissipation rate, and spectra of both the longitudinal velocity fluctuation and the passive temperature fluctuation are measured at a distance of 40 diameter downstream from the nozzle exit. All the scaling range exponents are influenced by the large-scale intermittency and the mean shear. The scalar fluctuation is much more sensitive to the variation in large-scale intermittency than the velocity fluctuation.	en
dc.description.statementofresponsibility	J. Mi and R. A. Antonia	en
dc.identifier.citation	Physical Review E, 2001; 64(2):026302	en
dc.identifier.doi	10.1103/PhysRevE.64.026302	en
dc.identifier.issn	1063-651X	en
dc.identifier.uri	http://hdl.handle.net/2440/2885
dc.language.iso	en	en
dc.publisher	American Physical Society	en
dc.rights	©2001 American Physical Society	en
dc.title	Effect of large-scale intermittency and mean shear on scaling-range exponents in a turbulent jet	en
dc.type	Journal article	en

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