摘要
研究弯道水流的三维流场有助于认识沿河公路路基的冲刷机理并制定相应的防护措施,从而提高路基抗水毁的能力.采用标准k-ε模型对圆心角为120°弯道的三维流场进行了合理模拟,并得出了河床剪应力的分布特征,为路基冲刷分析和合理防护措施的制定奠定了基础.
Study on the three-dimensional flow field in the vicinity of river bends is helpful to understand the mechanism of subgrade scour along the bends. Therefore, reasonable precautionary measures are presented and the ability of prevention of subgrade scour is enhanced. Standard model is used in the present study to numerically simulate the flow field of river bends. The calculated results are in good agreement with experimental data. The distribution of shear stress is also obtained from the numerical simulation, which consequently lays a foundation for the analysis of subgrade scour and establishment of rational preventive measures.
出处
《昆明理工大学学报（理工版）》
CAS
2006年第1期98-102,共5页
Journal of Kunming University of Science and Technology(Natural Science Edition)
关键词
弯道水流
公路路基
冲刷机理
bend flow
highway subgrade
erosion mechanism
