Author(s): Mahesh Patel; Ajaz Ahmad Mir; Bimlesh Kumar

Linked Author(s): Mahesh Patel

Keywords: Bedforms; Dunes; Sediment transport; Seepage; Turbulent flow

Abstract: Most of the alluvial channels have bedform formations that develop over time and place due to changes in flow characteristics and surrounding environments. They have a big impact on the river’s flow and sediment transport. Bed load and suspended load movement in alluvial streams lead to the production of bedforms and they vary geometrically in size and shape. Several experiments and studies have been conducted to get an insight into the relationship between fluid hydrodynamics and bedform dynamics. The impact of 3-D bedform shape on turbulent flow and sediment transport is still being investigated in different scenarios. With a comprehensive review, this work seeks to give extensive information and essential aspects of the bedform of turbulent flow across alluvial bedforms. The current research focuses on five particular topics and explores various features of bedforms and research possibilities such as hydrodynamics and the emergence of low-angle dunes, dune three-dimensionality, and its influence on the fluid dynamics, superimposition of bedforms, and the impact of suspended sediment on the dune flow field and morphology and the effect of downward seepage on the bed morphology and flow dynamics.

DOI: https://doi.org/10.1007/978-981-97-6009-1_11

Year: 2022