Unsteady turbulence, dynamic similarity and scale effects in bores and positive surges

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• 作者：Xinqian Leng ; Hubert Chanson ; ^{h.chanson@uq.edu.au}
• 关键词：Unsteady turbulence ; Dynamic similarity ; Scale effects ; Bores and surges ; Free-surface flow properties ; Froude similitude
• 刊名：European Journal of Mechanics - B/Fluids
• 出版年：2017
• 出版时间：January-February 2017
• 年：2017
• 卷：61
• 期：part_P1
• 页码：125-134
• 全文大小：5446 K
• 卷排序：61

文摘

Instantaneous free-surface and velocity properties were measured in propagating bores. Intense turbulent mixing was observed under breaking and undular tidal bores. Unsteady dimensionless properties were compared based upon a Froude and Morton similitude. Several parameters were affected by scale effects, including velocity and Reynolds stress fluctuations. Results point to the need for detailed field measurements.