Three-dimensional airflow and sediment transport patterns over barchan dunes

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• 作者：Alexander B. Smith^a ; ^{smith-a22@email.ulster.ac.uk} ; Derek W.T. Jackson^a ; J. Andrew G. Cooper^a ; ^b
• 关键词：Aeolian ; 3D airflow ; Turbulence ; CFD (computational fluid dynamics)
• 刊名：Geomorphology
• 出版年：2017
• 出版时间：1 February 2017
• 年：2017
• 卷：278
• 期：Complete
• 页码：28-42
• 全文大小：3095 K
• 卷排序：278

文摘

Compares measured and modelled three-dimensional airflow over barchan dunes. Modelled results showed good agreement with in situ measurements of velocity, directionality, and turbulence intensity. Two counter-rotating vortices are identified in highly turbulent lee-side flows. Lee-side sediment flux potential shows complex dynamics in response to coherent turbulent structures.