Vortex structure and heat transfer in the stagnation region of an impinging plane jet (simultaneous measurements of velocity and temperature fields by digital particle image velocimetry and laser-induced fluorescence)

Jun Sakakibara, Koichi Hishida, Masanobu Maeda

研究成果: Article査読

129 被引用数 (Scopus)

抄録

Velocity and temperature in the stagnation region of an impinging plane jet were simultaneously measured by digital particle image velocimetry and laser-induced fluorescence. Counter-rotating vortex pairs observed in the stagnation region sweep cold fluid toward the wall and eject high-temperature fluid toward the outer region. The weighted PDF of the turbulent heat flux indicates that the contribution of this ejection mechanism to the net heat flux is dominant. The streamwise vortex pair is transported from the free-jet region to the stagnation region and the vorticity is amplified by the main stream of what in the vicinity of the wall.

本文言語English
ページ(範囲)3163-3176
ページ数14
ジャーナルInternational Journal of Heat and Mass Transfer
40
13
DOI
出版ステータスPublished - 1997 9月
外部発表はい

ASJC Scopus subject areas

  • 凝縮系物理学
  • 機械工学
  • 流体および伝熱

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