论文部分内容阅读
本文从竖井进流水平旋转内消能泄水道的基本流态出发 ,对该种泄水道中的轴向及环向空腔水流的流速分布提出假定 ,并利用边界条件确定其形式。根据旋转水流r方向的基本微分方程和自由涡流的假设建立了这种泄水道环向空腔水流的压力积分方程表达式 ,并据此定义了这种流动的壁面压力系数。依据试验观测资料对这种流动的壁面压力系数及其影响因素的变化规律进行了分析 ,并给出相应的经验公式 ,从而较圆满地解决这种流动壁面压力等水力参数的计算 ,为进一步的理论分析与设计提供了依据与参考
Based on the basic flow regime of horizontally rotating inner dissipative drain in the shaft, this paper presents the assumptions of the velocity distribution of the axial and circumferential cavity flow in this kind of drain, and uses the boundary conditions to determine its form. According to the basic differential equation and the free vortex in the direction of swirling flow r, the expression of pressure integral equation of the annular cavity flow in the drain channel is established, and the wall pressure coefficient of the flow is defined accordingly. Based on the experimental observation data, the wall pressure coefficient of the flow and the change rule of its influencing factors are analyzed and corresponding empirical formulas are given, so as to satisfactorily solve the calculation of the hydraulic parameters such as the flow wall pressure and so on. Theoretical analysis and design provide the basis and reference