Longitudinal and Lateral Aerodynamic Coupling Effect of Wrap-Around Fins

摘要：

　　Based on the method of computational fluid dynamics,the flow mechanism of longitudinal and lateral aerodynamic coupling effect of a tactical missile with wrap-around Fins is investigated deeply.The numerical simulation is conducted with the Reynolds Averaged Navier-Stokes equations and the S-A turbulence model,where Mach number is from 0.4 to 3.0,angle-of-attack from 0 o to 10 o,and setting angle from 35′ to 120′.The longitudinal and lateral aerodynamic coefficients and flow structure are provided in the simulation.The results show that the missile with wrap-around fins produces lateral forces and yawing moments vertical to the plane of angle-of-attack.With the increase of Mach number,the lateral forces and yawing moments change directions more than once.At the same Mach number,the magnitudes of the lateral force and yawing moment increase as the angle-of-attack and setting angle increase.The flow mechanism of longitudinal and lateral aerodynamic coupling effect is obtained by the analysis of the flow-field.

关键词： Wrap-around Fins Longitudinal and lateral aerodynamic coupling effect Setting angle Numerical simulation

作者: Juan-mian Lei Jie-qun Zhou

作者单位: School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China

会议类型: 国际会议

会议名称: The 8th International Conference of Computational Fluid Dynamics, (ICCFD8)(第八届国际计算流体力学会议)

会议地点: 成都

会议语种:英文

页码: 1-9

在线出版日期: 2014-07-25（万方平台首次上网日期，不代表论文的发表时间）