Turbulence‐resolving, two‐phase flow simulations of wave‐supported gravity flows: A conceptual study
Turbulence‐resolving, two‐phase flow simulations of wave‐supported gravity flows: A conceptual study
复制标题
波浪支撑重力流的湍流解析两相流模拟：概念研究
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
C. Ozdemir
中科院分区：
文献类型：
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作者：
C. Ozdemir
Discoveries over the last three decades have shown that wave-supported gravity flows (WSGFs) are among the participating physical processes that carry substantial amount of fine sediments across low-gradient shelves. Therefore, understanding the full range of mechanisms responsible for such gravity flows is likely to shed light on the dynamics of subaqueous delta and clinoform development. As wave-induced boundary layer turbulence is the major agent to suspend sediments in WSGFs, the scale of WSGFs in the water column is also bounded by the wave-induced boundary layer thickness which is on the order of decimeters. Therefore, in order to explore the details of participating physical mechanisms, especially that due to turbulence-sediment interaction, highly resolved and accurate numerical models or measurements in the laboratory and the field are required. In this study, the dynamics of WSGFs is investigated by using turbulence-resolving, two-phase flow simulations that utilize Direct Numerical Simulations (DNS). The effect of variable sediment loading, slope, and wave orbital velocity is investigated via 21 simulations.
