Numerical Simulation of Pipeline Local Scour With Lee-Wake Effects
Numerical Simulation of Pipeline Local Scour With Lee-Wake Effects
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DOI：
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发表时间：
1999
影响因子：
0.8
通讯作者：
Fangjun Li;Liang Cheng
中科院分区：
文献类型：
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作者：
Fangjun Li;Liang Cheng
建立了管道周围局部冲刷的形态模型。该模型基于Navier-Stokes方程和可蚀边界调整技术，无需任何泥沙输运公式即可预报平衡冲刷坑。计算结果清楚地表明，管道后的背风尾迹对局部冲刷坑的发展有显著的贡献，特别是对实验中观察到的平缓冲刷坡度。预测的最大冲刷深度和冲坑形状与文献中公布的试验数据吻合较好。
A morphological model for the local scour around pipelines is developed. Based on the Navier-Stokes equation and an erodible boundary adjustment technique the model predicts the equilibrium scour hole without using any sediment transport formula. The calculation results clearly reveal that the lee-wakes behind the pipeline contribute significantly to the local scour hole development, especially to the gentle scour slope observed in experiments. The predicted maximum scour depth and the shape of the scour hole compare favorably with the experimental data published in the literature.