Holographic Visualization of Convective Flow Around a Heated Rotating Cone of Finite Length

[+] Author and Article Information
S. M. Tieng, Y. C. Wang

Institute of Aeronautics and Astronautics, National Cheng Kung University, Tainan, Taiwan 70101

J. Fluids Eng 115(3), 515-522 (Sep 01, 1993) (8 pages) doi:10.1115/1.2910169 History: Received March 25, 1992; Revised January 07, 1993; Online May 23, 2008


The convective flow around a heated rotating cone of finite length is investigated experimentally by means of 3-D and real-time holographic interferometry at rotational speeds of up to 4600 rpm and rotational angles from 0 to 90 deg. This advanced optical technique allows visualization of the thermal boundary layer, it’s unstable transition region and the turbulent zones, as well as providing a detailed visual analysis of the holographic fringe patterns, information about the thickness of the thermal boundary layer, and a new method for detecting and determining the critical points and critical Reynolds numbers of the transition region. The results are compared with previously obtained experimental data.

Copyright © 1993 by The American Society of Mechanical Engineers
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