分水角对建筑物过流能力影响的成因分析

Study and Analysis about the Effect of Diversion Angle on the Conveyance Copacity of Diversion Construction

从水流运动的基本原理出发,由边界条件和流态变化所引起的水流结构、动力条件等方面的演变入手,针对分水角的变化对分水建筑物过流能力影响的成因进行了理论分析.通过资料分析和数学推演得出了分水角影响系数的计算公式,并对其精度进行了评价,给出分水角与影响系数之间的关系曲线,可供实际工程应用参考.弥补了传统做法的不足,对正确认识分水渠首附近水流的物理结构和物理本质具有重要意义.

Based on with the basic principle of flow,beginning with the variety of flow structures and power conditions caused by the change of boundary conditions and flow regimes,the reasons why the change of the diersion angle affects the conveyance capacity of the diversion gate are theoretically analyzed and discussed. By analyzing data and mathematiclly reckoning and working out the formulas of diversion angle effective coefficient,and accurately analyzing and practically proving the formulas,the convenience is provided for the application of practical engineerinng and the shortages of this work are remedied.Meanwhile,it is of greater significance in correctly recognizing the physical structure and nature of the flow diversion cut nearby.