The economic benefits of new additional energy dissipation facilities are estimated in terms of the decreased percentage of the sequent depth of hydraulic jump and length of jump , or the capacity of hydraulic jump under the unit width . the additional flow hydraulic jump theory has been demonstrated by model tests 文中用新增齿墩设施的跃后水深、水跃长度和单宽水跃容积减少的百分数,估计新增设施的经济效益,并通过模型试验验证了附加射流水跃消能的理论分析。
Abstract : through the theoretical liquid dynamics complex study to the bridge pier and abutment circling flow , this paper related with bridge abutment maximum clear water equilibrium scouring experiment ? s analyses has made out the bridge abutment ? s velocity circulation , maximum flow capacity per unit width , and the maximum part scouring depth counting method 文摘:对不可压缩理想流体桥台平面绕流复势研究,确定桥台绕流流速环量和桥台极限绕流流量,并结合清水极限平衡冲刷实验进行桥台最大局部冲刷深度的理论探讨
Current . in order to make diffluent piers with low ridge to be popularized and applied , the surface wave of low fr . current is chosen as the research object . we measure the surface wave elements and the velocity distribution of various diffluent piers scheme by the experiment of physical model . we also analyze the average wave height , the the average value of the square of wave , unit width of the wave ' s energy , the probability density distribution of wave height , and the power chart character , so as to reveal the weakening wave mechanism of the diffluent piers 低fr水流的核心是波浪问题,为了低坎分流墩的推广应用,本研究以低fr水流的表面波浪作为研究对象,通过物理模型试验,对各种分流墩方案消能工的下游水面波浪要素、流速分布进行测试,分析低坎分流墩下游波浪的平均波高、均方根、单宽波能、波高概率密度分布及功率谱特性变化规律,从而揭示了低坎分流墩的削波机理。