Miller, Paul L. and Dimotakis, Paul E. (1992) Measurements of scalar power spectra in high Schmidt number turbulent jets. California Institute of Technology , Pasadena, CA. (Unpublished) https://resolver.caltech.edu/CaltechAUTHORS:20141021-163918527
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Abstract
Single-point, jet-fluid concentration measurements obtained from high Schmidt number (Sc ≃ 1.9 x 10^3) turbulent jets permit an investigation of temporal scalar power spectra, for jet Reynolds numbers in the range of 1.25 ≤ Re x 10^(-4)≤ 7.2. At intermediate scales, we find a spectrum with a logarithmic derivative (slope) that is increasing with Reynolds number, in absolute value, but less than 5/3 at the highest Reynolds number in our experiments. At the smallest scales, our spectra exhibit no k^(-1) power-law behavior, possessing a log-normal region over a range of scales exceeding a factor of 40, in some cases.
| Item Type: | Report or Paper (Technical Report) | ||||||||
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| Additional Information: | © 1992 California Institute of Technology GALCIT Report FM92-3. We would like to acknowledge contributions by Dan Lang and David Dowling to the experiments. This work was supported by AFOSR Grants No. 83-0213 and 88-0155. and GRI Contract No. 5087-260-1467. | ||||||||
| Group: | Graduate Aeronautical Laboratories (Fluid Mechanics), GALCIT | ||||||||
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| DOI: | 10.7907/hpdt-2e37 | ||||||||
| Record Number: | CaltechAUTHORS:20141021-163918527 | ||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20141021-163918527 | ||||||||
| Official Citation: | MILLER,P . L. & DIMOTAKIS, P. E. 1992 "Measurements of scalar power spectra in high Schmidt number turbulent jets," GALCIT Report FM92-3. | ||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||
| ID Code: | 50650 | ||||||||
| Collection: | CaltechGALCITFM | ||||||||
| Deposited By: | INVALID USER | ||||||||
| Deposited On: | 22 Oct 2014 19:16 | ||||||||
| Last Modified: | 17 Nov 2021 17:34 |
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