Three-dimensional temperature measurement by liquid crystal thermometry and its application to the study of turbulent thermal convection

Nobuyuki Fujisawa, Ronald J. Adrian

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

A new calibration technique of liquid crystal thermometry has been introduced to the quantitative measurement of temperature in a thermal fluid and applied to the study of turbulent thermal convection. The present calibration technique improves the accuracy of temperature measurement in comparison with the classical calibration technique with hue. Three-dimensional temperature measurement of turbulent thermal convection over a horizontal smooth surface is carried out at a flux Rayleigh number of 3×109 by scanning a light sheet normal to the image plane and capturing a number of sequential visualized images. The spatial temperature distributions of thermal plumes over a horizontal surface are demonstrated by the reconstruction of isothermal contour surfaces and various cross-sectional views of the plumes. These results indicate the presence of a polygonal cell structure close to the surface and the generation of plumes at the intersections of high-temperature lines.

Original languageEnglish (US)
Pages (from-to)818-823
Number of pages6
JournalNippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume63
Issue number607
DOIs
StatePublished - Jan 1 1997
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Three-dimensional temperature measurement by liquid crystal thermometry and its application to the study of turbulent thermal convection'. Together they form a unique fingerprint.

  • Cite this