急流弯道双曲底板的体形设计  

Double curvature slab of bended channel for preventing shock wave

作　　者：黄春花[1] 孙颖[2] 陈肇和[2] 冯新权[3] 

机构地区：[1]中国水利水电科学研究院水力学研究所,北京100038 [2]北京工业大学分部,北京100044 [3]山东省水利勘测设计研究院,山东济南250013

出　　处：《水利学报》2003年第8期1-5,共5页Journal of Hydraulic Engineering

摘　　要：本文提出采用双曲底板的方法消除急流渠道弯段的冲击波。在柱面座标系中建立不可压缩粘性流体的运动方程,导出无量纲形式的自由水面方程并建立了相应连续性方程。通过迭代法求解自由水面方程并计算出自由水面高程,由连续性方程求出水流深度。从水面高程中减去水深得出底板高程。文中给出了按此方法设计的马河水库溢洪道弯道段水流计算结果。结果证明渠道内水面平稳,没有发生冲击波。底板设计由编程计算完成。Double Curvature channel slab is proposed for preventing shock wave occurred to super critical flow in bended channel. The dimensionless equations for free surface in cylindrical coordinate system is established based on flow equations for incompressible viscous flow and the corresponding equation for continuity of flow is also deduced. The flow surface elevation is obtained from iteration calculation of free surface equation and the flow depth is calculated from equation of continuity. Thus, the elevation of slab can be obtained by subtracting the flow depth from the elevation of free surface. An example is given for demonstration of this design method.

关 键 词：双曲底板 弯道 急流 冲击波 

分 类 号：TV133[水利工程—水力学及河流动力学]