单股窄薄片状射流入射水垫塘流场数值模拟研究  

Numerical simulation study on flow field created in plunge pool by single strap-type jet flow

作　　者：焦爱萍[1] 刘沛清[1] 

机构地区：[1]北京航空航天大学流体力学研究所

出　　处：《水利水电技术》2007年第9期28-31,共4页Water Resources and Hydropower Engineering

基　　金：国家优秀博士论文基金资助项目(200043);自然科学基金重点项目(50539060);四川大学水力学与山区河流开发保护国家重点实验室开放基金(0405)

摘　　要：表孔宽尾墩—深孔窄缝挑坎联合泄洪形成的窄薄片状交错射流消能是一种新型消能型式。采用RNGk-ε紊流模型和VOF法结合溪洛渡双曲拱坝反拱形水垫塘对单股窄薄片状射流入射水垫塘的非定常流场进行了三维数值模拟。全面细致的分析讨论了单股窄薄片状射流进入消力池后的水流结构与消能机理,为进一步深入研究多股多层窄薄片状射流和该种新型消能型式的应用奠定基础。The strap-type staggered jet flow created during combined flood discharge by surface outlet with flaring pier deep slittype flip bucket is a new type of energy dissipation. Based on RNG k - ε turbulence model and volume of fluid method, a 3-D numerical simulation is made on the unsteady flow field created by the strap-type jet flow jetting into plunge pool in combination with the inverted arch plunge pool of Xiluodu Double Curvature Arch Dam. The flow structure and energy dissipation mechanism of a single strap-type jet flow are thoroughly and extensively analyzed and discussed, which will lay a good foundation for application of such new energy dissipation mode and further study on multiple layers of strap-type jet.

关 键 词：窄薄片状射流 三维流场 紊流 数值模拟 VOF法 

分 类 号：TV135.2[水利工程—水力学及河流动力学]