湾塘水电站泄流雾化的数值计算  

Numerical calculation of overflow atomization for Wantang Hydropower Station

作　　者：张华[1] 练继建[1] 王善达[2] 

机构地区：[1]天津大学建筑工程学院,天津300072 [2]国家电力公司中南勘测设计研究院,湖南长沙410014

出　　处：《水利学报》2003年第4期8-14,共7页Journal of Hydraulic Engineering

摘　　要：根据底流消能泄流雾化的机理,应用量纲分析方法,得到水雾雾源量的计算关系式;在雾源为连续线源和任意风向的条件下,利用高斯扩散方程,研究了水雾在峡谷内扩散规律;结合雾雨自动转换过程、碰并过程、雾滴的凝结和蒸发过程,得到雾源下游流场水雾浓度、温度、相对湿度和降水强度的分布;对湾塘水电站底流消能雾化进行了数值计算,计算结果与原型观测数据基本一致。An equation of water fog source flux, in the case of hydraulics jump energy dissipation, was derived by means of dimensional analysis. Under the condition of lineal fog source and arbitrary wind direction, the diffusion rule of fogging in a narrow valley induced by hydraulics jump was studied by utilizing Gauss diffusion equation. Combining with the process the fograin autochanging, coagulation, condensation and evaporation of fog drop, some parameters such as water fog density, temperature, relative humidity and rainfall intensity were calculated in the flow field downstream of the fog source. A numerical calculation of overflow atomization for Wantang Hydropower Station was carried out and the result was consistent with the field observation data.

关 键 词：底流消能 雾化 数值计算 

分 类 号：TV135.2[水利工程—水力学及河流动力学]