掺气射流水下扩散浓度分布规律研究  

Characteristics of Concentration Diffusion of Submerged Aerated Jets

作　　者：董志勇[1] 吴持恭[1] 杨永全[1] 张云[1] 

机构地区：[1]成都科技大学高速水力学国家重点实验室

出　　处：《成都科技大学学报》1994年第4期31-38,共8页

摘　　要：本文对掺气射流在水垫塘扩散的浓度分布规律进行了理论分析与试验研究．实测资料表明：在冲击射流区，掺气射流不同断面的浓度分布存在一定的自模性，且近似符合高斯分布，与理论计算基本吻合．射流轴线浓度沿射流流程以双曲线规律衰减，并给出其半经验公式．This paper discribes characteristics of concentration diffusion that aerated jet diffuses in the plunge pool. Experimental results show that profile similarity is satisfied for air concentration and appoximatively correspondent to normal distribution in each plunge angle. The concentration along jet centre-line gradually decreases in the form of hyperbola and semiempircal formulas have been given. In addition, characteristics of concentration diffusion of submerged aerated jets is theoretically analysed. The agreement between the theoretical equations and the experimental results is bound to be good.

关 键 词：掺气射流 水垫塘 扩散浓度 

分 类 号：TV131.34[水利工程—水力学及河流动力学]