Three-Dimensional Mach-Zehnder Interferometric Tomography of the Rayleigh-Bénard Problem

[+] Author and Article Information
Y. C. Michael, K. T. Yang

Department of Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, IN 46556

J. Heat Transfer 114(3), 622-629 (Aug 01, 1992) (8 pages) doi:10.1115/1.2911326 History: Received July 01, 1991; Revised January 01, 1992; Online May 23, 2008


A three-dimensional experimental technique based on axial tomography is demonstrated in this study for the Rayleigh-Bénard convection problem. The technique can perform under severe blockage conditions and with a small number of projections. The major requirement of the technique is an adequate initial guess of the field and the use of an iterative inversion algorithm. In this study, five views are used to study the steady-state natural convection inside a three-dimensional rectangular cavity filled with water at Ra = 5470 ± 100 and Ra = 6140 ± 100. The reconstructed results are estimated to be accurate with a standard deviation of about 0.01°C. The temperature measurements show strong three-dimensional features in the flow.

Copyright © 1992 by The American Society of Mechanical Engineers
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