Characterization of counter-rotating streamwise vortices in flat rectangular channel with one-sided wavy wall

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• 作者：Yann Bouremel^a ; ^{y.bouremel@ucl.ac.uk} ; Hatsari Mitsudharmadi^b ; Alexander C. Budiman^c ; Sonny H. Winoto^d ; ¹
• 关键词：Counter-rotating vortices ; Wavy wall ; Vorticity ; Mixing ; Stretching
• 刊名：Experimental Thermal and Fluid Science
• 出版年：2017
• 出版时间：April 2017
• 年：2017
• 卷：82
• 期：Complete
• 页码：75-82
• 全文大小：1408 K
• 卷排序：82

文摘

Particle Image Velocimetry is used to study counter-rotating streamwise vortices. Vorticity ωzωz decreases downstream and increases with Reynolds number. Vortices gets closer downstream and smaller with increasing Reynolds number. Main direction of stretching orientated at 45° to the streamwise direction. Mixing increases (decreases) over favourable (flat and adverse) pressure gradients.