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

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)

Document Details

Document Type
Technical Report
Publication Date
Jul 23, 1992
Accession Number
ADP009047

Entities

People

  • S. M. Tieng
  • Yuanheng Wang

Organizations

  • National Cheng Kung University

Tags

DTIC Thesaurus Topics

  • Boundaries
  • Boundary Layer
  • Experimental Data
  • Fluid Mechanics
  • Fluid Statics
  • Interferometry
  • Layers
  • Mechanics
  • Regions
  • Reynolds Number
  • Statics
  • Thermal Boundary Layer
  • Transitions

Fields of Study

  • Physics

Readers

  • Computer Vision.
  • Fluid Dynamics.
  • Optical Physics and Photonics.