双锥侧向喷流的数值模拟研究

利用侧向喷流进行导弹姿态、轨迹控制是近年来导弹空气动力学前沿热点问题之一。要成功地设计以侧向喷流控制为基础的导弹,必须分析喷流与来流干扰对气动性能的影响。本文采用AUSM 上风格式空间离散三维可压缩非定常NS方程组,数值模拟了双锥侧向喷流干扰流动。将表面压力分布与文献中试验值、计算值进行比较,给出了干扰流场结构,分析了喷流干扰对双锥气动力、力矩的影响。

Numerical simulation of biconical body lateral jet

Lateral jet control of a missile attitude and trajectory is a currentmissile aerodynamics attractive subject.A successful design effort based on the lateral jet control,must develop an investigation of its interaction with the external flow and the impact on missile aerodynamics performance.Numerical simulation of biconical body lateral jet is carried out by solving three-dimensional unsteady compressible Navier-Stokes equations,using AUSM scheme.Surface pressure distributions are compared with those of the literature.The structure of lateral jet flow interactions is offered.The normal force coefficient and pitching moment coefficient variety with respect to the lateral jet have been discussed.