“Y”型汇流口水流水力特性试验研究  

Research of Hydraulic Characteristics of “Y”shaped Junction

作　　者：郭维东[1] 王晓刚[1] 曹继文[2] 杨天恩 梁岳[1] 

机构地区：[1]沈阳农业大学水利学院,辽宁沈阳110161 [2]中国水利水电科学研究院,北京100044 [3]辽宁省营口市水利局,辽宁营口115000

出　　处：《水电能源科学》2005年第3期53-56,i005,共5页Water Resources and Power

摘　　要：利用ADV对“Y”型汇流口水流三维水力特性进行模型试验研究。结果发现,与支流斜接干流型汇流口水流一样,“Y”型汇流口也存在流动停滞区、流速偏转区、分离区、流速加速区等区域。“Y”型汇流口水流总体向下游呈螺旋流,随着汇流比的增大,河床高差的存在,这种螺旋流趋势减弱。河床高差的存在会大大增强支流侧水流脉动强度。This paper processes a model practice to research t he three dimensional hydraulic characteristics of flow of “Y”shaped junction using the ADV(Acoustic Doppler Velicimeter). According to the results there are s tagnation zone, flow deflection zone, flow separation zone, acceleration zone an d so on which can be seen at “mainstream inclined tributary”shaped junction too. The whole characteristics of flow is spiral flow towards downstream. at Y'shaped junction. With the ratio of discharge becoming higher and decl ine of riverbed, the vorticalgrade of this spiral flow will be weaken. The decli ne of riverbed will greatly increase the pulsant intensity of flow of tributary at channel confluence.

关 键 词：ADV 螺旋流 汇流比 河床高差 

分 类 号：TV13[水利工程—水力学及河流动力学]