Accession Number : ADP009047

Title :   Investigation on Thermal Boundary Layer Around Heated Spinning Cone by Using 3D-Holographic Interferometry,

Corporate Author : NATIONAL CHENG KUNG UNIV TAINAN (TAIWAN) INST OF AERONAUTICS AND ASTRONAUTIC S

Personal Author(s) : Tieng, S. M. ; Wang, Y. C.

Report Date : 23 JUL 1992

Pagination or Media Count : 6

Abstract : The convective flow around a heated rotating cone of finite length is investigated experimentally by means of 3D and realtime holographic interferometry at rotational speeds up to 4600 rpm and rotational angles from 0 to 90. 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 critcal Reynolds numbers of the transition region. The results are compared with previously obtained experimental data. (Author)

Descriptors :   *THERMAL BOUNDARY LAYER, *HOLOGRAPHY, CONVECTION(HEAT TRANSFER), ROTATION, REYNOLDS NUMBER, TURBULENCE, BOUNDARY LAYER TRANSITION, COMPARISON, EXPERIMENTAL DATA, TAIWAN, THREE DIMENSIONAL, OPTICAL INTERFEROMETERS, FLOW VISUALIZATION, FLOW FIELDS, SPATIAL DISTRIBUTION.

Subject Categories : Thermodynamics
      Holography
      Optical Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE