Numerical analysis and optimization of boundary layer suction on airfoils

查看全文 作　　者：Shi [1]Yayun;Bai [1]Junqiang;Hua [2]Jun;Yang [1]Tihao

机构地区：[1]School of Aerodynamics, Northwestern Polytechnical University;[2]Chinese Aeronautical Establishment

出　　处：《Chinese Journal of Aeronautics》索引2015年第28卷第2期,共11页

基　　金：supported by the National Basic Research Program of China (No. 2014CB744804) 摘　　要：Numerical approach of hybrid laminar flow control(HLFC) is investigated for the suction hole with a width between 0.5 mm and 7 mm. The accuracy of Menter and Langtry's transition model applied for simulating the flow with boundary layer suction is validated. The experiment data are compared with the computational results. The solutions show that this transition model can predict the transition position with suction control accurately. A well designed laminar airfoil is selected in the present research. For suction control with a single hole, the physical mechanism of suction control, including the impact of suction coefficient and the width and position of the suction hole on control results, is analyzed. The single hole simulation results indicate that it is favorable for transition delay and drag reduction to increase the suction coefficient and set the hole position closer to the trailing edge properly. The modified radial basis function(RBF) neural network and the modified differential evolution algorithm are used to optimize the design for suction control with three holes. The design variables are suction coefficient, hole width, hole position and hole spacing. The optimization target is to obtain the minimum drag coefficient. After optimization,the transition delay can be up to 17% and the aerodynamic drag coefficient can decrease by 12.1%. 关键词：优化设计附面层径向基函数(RBF)神经网络抽吸数值分析层流控制机翼差分进化算法

相关文献

参考文献（22）
引证文献（12）
耦合文献（64）

参考文献(22)

引证文献(12)

耦合文献(64)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

Numerical analysis and optimization of boundary layer suction on airfoils

参考文献(22)

引证文献(12)

耦合文献(64)

用户提示