Measurements of thermally stratified pipe flow using image-processing techniques

J. Sakakibara, K. Hishida, M. Maeda

研究成果: Article査読

142 被引用数 (Scopus)

抄録

The cross-correlation technique and Laser Induced Fluorescence (LIF) have been adopted to measure the time-dependent and two-dimensional velocity and temperature fields of a stably thermal-stratified pipe flow. One thousand instantaneous and simultaneous velocity and temperature maps were obtained at overall Richardson number Ri = 0 and 2.5, from which two-dimensional vorticity, Reynolds stress and turbulent heat flux vector were evaluated. The quasi-periodic inclined vortices (which connected to the 'crest') were revealed from successive instantaneous maps and temporal variation of vorticity and temperature. It has been recognized that these vortices are associated with the 'crest' and 'valley' in the roll-up motion.

本文言語English
ページ(範囲)82-96
ページ数15
ジャーナルExperiments in Fluids
16
2
DOI
出版ステータスPublished - 1993 12 1

ASJC Scopus subject areas

  • Computational Mechanics
  • Mechanics of Materials
  • Physics and Astronomy(all)
  • Fluid Flow and Transfer Processes

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