Local Scour due to Submerged Horizontal Jet
Local Scour due to Submerged Horizontal Jet
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DOI：
10.1061/(asce)0733-9429(1994)120:8(973
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发表时间：
1994-08
影响因子：
2.4
通讯作者：
S. Chatterjee;S. Ghosh;M. Chatterjee
中科院分区：
文献类型：
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作者：
S. Chatterjee;S. Ghosh;M. Chatterjee
对从水闸流出的水平射流流经刚性护坦，然后流到可冲刷河床所导致的局部冲刷和泥沙输移现象进行了研究。基于实验数据，通过建立达到平衡阶段的时间、最大冲刷深度位置和沙丘峰值以及最大冲刷深度随时间变化的经验表达式，对冲刷特性进行了关联。还建立了预测冲刷坑发展和泥沙输移的相似准则，并且除了水流参数和泥沙特性外，射流扩散特性在这些过程中起着重要作用。本研究中建立的经验关系强调了在针对特定水流情况建立相似准则时进行单独评估的必要性。
The phenomena of local scour and sediment transport due to a horizontal jet issuing from a sluice and flowing over a rigid apron, then on to an erodible bed, have been investigated. Based on experimental data, the scour characteristics have been correlated through the development of empirical expressions for the time to reach equilibrium stage, the locations of maximum scour depth and peak of dune, and the variation of maximum scour depth with time. Similarity criteria for the predication of development of the scour hole and sediment transport have also been developed and, apart from the flow parameters and sediment properties, the jet diffusion characteristics play an important role in these processes. The empirical relationships developed in this study highlight the necessity of an individual assessment when developing the similarity criteria for a particular flow situation.