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Experimental Investigation of Statistical Moments of Travel Time in Grid-Generated Turbulence

T. A. Andreeva, Worcester Polytechnic Institute
S. B. Meleshi, Worcester Polytechnic Institute
William W. Durgin, Worcester Polytechnic Institute

Article comments

AIAA 2004-1032. Reprinted with permission of the American Institute of Aeronautics and Astronautics, Inc. Publisher website: http://www.aiaa.org/content.cfm?pageid=2

NOTE: At the time of publication, the author William W. Durgin was affiliated with Worcester Polytechnic Institute. Currently, January 2008, he is Provost and Vice President of Academic Affairs at California Polytechnic State University - San Luis Obispo.

Abstract

An experimental technique for investigation of the behavior of acoustic wave propagation through a turbulent medium is discussed. The present study utilizes the ultrasonic travel-time technique to diagnose a grid-generated turbulence. The statistics of the travel-time variations of ultrasonic wave propagation along a path are used to determine some metrics of the turbulence. Experimental data obtained using ultrasonic technique confirms numerical and theoretical predictions of nonlinear increase of the first-order travel time variance with propagation distance.

Suggested Citation

T. A. Andreeva, S. B. Meleshi, and William W. Durgin. "Experimental Investigation of Statistical Moments of Travel Time in Grid-Generated Turbulence" 42nd AIAA Aerospace Sciences Meeting and Exhibit: Reno, NV (2004): 1-5.
Available at: http://works.bepress.com/wdurgin/18

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