Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/2885
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Type: | Journal article |
Title: | Effect of large-scale intermittency and mean shear on scaling-range exponents in a turbulent jet |
Author: | Mi, Jianchun Antonia, R. A. |
Citation: | Physical Review E, 2001; 64(2):026302 |
Publisher: | American Physical Society |
Issue Date: | 2001 |
ISSN: | 1063-651X |
School/Discipline: | School of Mechanical Engineering |
Statement of Responsibility: | J. Mi and R. A. Antonia |
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. |
Rights: | ©2001 American Physical Society |
DOI: | 10.1103/PhysRevE.64.026302 |
Appears in Collections: | Mechanical Engineering publications |
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