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 |
巻 | 16 |
号 | 2 |
DOI | |
出版ステータス | Published - 1993 12月 1 |
ASJC Scopus subject areas
- 計算力学
- 材料力学
- 物理学および天文学(全般)
- 流体および伝熱