C型槽参数对NACA0009翼型间隙流动的影响  

Influence of C groove parameters on NACA0009 hydrofoil clearance flow

作　　者：吴广宽[1] 王浩洋 罗兴锜[1] 冯建军[1] 闫思娜 Guang-kuan Wu;Hao-yang Wang;Xing-qi Luo;Jian-jun Feng;Si-na Yan(Institute of Water Resources and Hydro-electric Engineering,Xi’an University of Technology,Xi’an 710048,China)

机构地区：[1]西安理工大学水利水电学院,西安710048

出　　处：《水动力学研究与进展（A辑）》2022年第1期93-100,共8页Chinese Journal of Hydrodynamics

基　　金：国家重点研发计划(2018YFB1501900);国家自然科学基金(52079108,51909212)。

摘　　要：间隙流动广泛存在于流体机械转子位置,其存在会直接影响内部流态的稳定性,降低效率的同时降低水力机械的寿命。该文采用数值计算方法研究了C型槽对NACA0009翼型叶顶间隙泄漏涡的抑制机理,并使用正交试验法对C型槽的槽数、槽宽、槽深和内侧面偏斜角度对翼型的影响进行了研究。研究结果表明:C型槽产生低速涡流,有效降低了间隙位置泄漏流的流速,从而抑制高速泄漏流的产生,且C型槽深度和偏斜角度的选取对于翼型的水动力性能影响较大。并借助正交试验结果提出了两种最优C型槽设置方法,有效抑制了间隙泄漏涡。Clearance flow widely exists in the rotor position of fluid machinery,and its existence will directly affect the stability of the internal flow pattern,which reduce efficiency while reducing the life of hydraulic machinery.In this paper,numerical calculation method is used to study the suppression mechanism of C groove on NACA0009 hydrofoil tip clearance leakage vortex,and the orthogonal test method is used to determine the groove number,groove width,groove depth and inner side deflection angle of the C-shaped groove on the wing.The impact of the parameters is studied.The research results show that the C groove produces low-speed vortex,which effectively reduces the flow velocity of the leakage flow at the gap position,thereby suppressing the generation of high-speed leakage flow.And the selection of C groove depth and deflection angle has a greater impact on the hydrodynamic performance of the hydrofoil.With the help of orthogonal test results,two optimal C groove setting methods are proposed to effectively suppress the leakage vortex.

关 键 词：NACA0009翼型 C型槽 正交试验 间隙泄漏涡 数值模拟 涡核轨迹 

分 类 号：TV136[水利工程—水力学及河流动力学]