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| 1 | 开孔桥墩墩后水动力特性PIV试验显示文摘为探讨桥墩上设置开孔对墩后水流结构的影响,采用粒子图像测试技术(PIV)对矩形开孔桥墩墩后的水平面和立面流场进行了测量,并对墩后的水流结构进行了分析。结果表明:矩形开孔桥墩能够改变开孔位置所在水深处尾流的运动规律,贯穿方孔的高速水流与墩侧绕流以及墩后低速区水流形成强烈的剪切作用,抑制了大尺度旋涡的发展与运动,并且切断了墩后底部水流的上升运动轨迹;墩后瞬时流场存在周期性的运动规律,具有高度间歇特性。 | 邓斌 唐瑶 蒋昌波 赵兵兵 王刚 | 2018 | 水利水电科技进展2018，38，3： | 1 |
| 2 | Improved bridge pier collar for reducing scour显示文摘This study performed a bridge pier collar comparison for the purpose of reducing scour,while introducing a new collar design.The new collar,referred to as Collar Prototype Number 3,was designed based on an equilibrium scour hole and provides a method of controlling the horseshoe vortex.Numerical modelling was utilized to show the flow field and bed shear stress as a result of using Collar Prototype Number 3.A prototype model of Collar Prototype Number 3 and a flat plate collar were constructed for the purpose of comparing both experimentally under different flow conditions.Collar Prototype Number 3 proved to be an effective device as it reduced scour in terms of the maximum depth downstream of the pier and overall volume,in some instances,by up to 69.7%and 75.7%,respectively.Furthermore,Collar Prototype Number 3 outperformed the flat plate collar,especially because,unlike the flat plate collar,Collar Prototype Number 3 did not experience undermining. | Christopher Valela Colin David Rennie Ioan Nistor | 2022 | International Journal of Sediment Research2022，37，1： | 0 |
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