Experimental Evidence of the Kraichnan Scalar Spectrum at High Reynolds Numbers-Reference-Cited by-同舟云学术

Experimental Evidence of the Kraichnan Scalar Spectrum at High Reynolds Numbers

Published:2012-06-22 Issue:10 Volume:42 Page:1717-1728
ISSN:0022-3670
Container-title:Journal of Physical Oceanography
language:en
Short-container-title:

Author:

Bogucki D. J.¹,Luo H.¹,Domaradzki J. A.²

Affiliation:

1. Department of Physical and Environmental Sciences, Texas A&M University-Corpus Christi, Corpus Christi, Texas

2. Department of Aerospace and Mechanical Engineering, University of Southern California, Los Angeles, California

Abstract

Abstract Measurements of horizontal temperature gradient spectra were carried out in a 25 m × 12 m × 3 m freshwater well mixed swimming pool. The associated flow Reynolds number was found to vary from 4 × 103 to 6 × 103. In all analyzed cases, at large wavenumbers k, the temperature gradient spectra exhibited behavior consistent with the Kraichnan spectral form: ~exp[−(6qk)1/2k] with constant . The measurements are in agreement with direct numerical simulations of a passive scalar flow with of Bogucki et al. and with recent experimental observations of Sanchez et al.

Publisher

American Meteorological Society

Subject

Oceanography

Link

http://journals.ametsoc.org/jpo/article-pdf/42/10/1717/4517583/jpo-d-11-0214_1.pdf

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