Application of holographic interferometry and 2D PIV for HSC convective flow diagnostics
SCIE
SCOPUS
- Title
- Application of holographic interferometry and 2D PIV for HSC convective flow diagnostics
- Authors
- Lee, SJ; Kim, S
- Date Issued
- 2004-04
- Publisher
- IOP PUBLISHING LTD
- Abstract
- Variations of temperature and velocity fields in a Hele-Shaw convection cell (HSC) were investigated using a holographic interferometry and 2D PIV system with varying Rayleigh number. To measure quasi-steady variation of the temperature field, two different measurement methods of holographic interferometry-the double-exposure method and the real-time method-were employed. In the double-exposure method, unwanted waves were eliminated effectively using a digital image processing technique. The reconstructed images are clear, but transient flow cannot be reconstructed clearly. On the other hand, transient convective flow can be reconstructed well using the real-time method. However, the fringe patterns reconstructed by the real-time method contain more noise than the double-exposure method. Experimental results show a steady flow pattern at low Rayleigh numbers and a time-dependent periodic flow structure at high Rayleigh numbers. The periodic flow pattern at high Rayleigh numbers obtained by the real-time holographic interferometer method is in good agreement with the PIV results.
- Keywords
- holographic interferometry; PIV; thermal fluid flow; HSC; TEMPERATURE; LIQUID
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/17975
- DOI
- 10.1088/0957-0233/15/4/008
- ISSN
- 0957-0233
- Article Type
- Article
- Citation
- MEASUREMENT SCIENCE & TECHNOLOGY, vol. 15, no. 4, page. 664 - 672, 2004-04
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