有/无尾喷流效应影响的导弹侧向喷流干扰数值研究  

Numerical Investigation on Interactions of Lateral Jet with/without Plume for Missiles

作　　者：白涛涛[1] 曹军伟[1] 王虎干[1] 孙振华[1] Bai Taotao;Cao Junwei;Wang Hugan;Sun Zhenhua(China Airborne Missile Academy,Luoyang 471009,China)

机构地区：[1]中国空空导弹研究院,河南洛阳471009

出　　处：《航空兵器》2020年第3期83-87,共5页Aero Weaponry

摘　　要：为研究尾喷流效应对导弹尾端直接力装置侧向喷流与主流流动干扰的影响,采用三维流场CFD仿真方法。首先,对带X形尾舵的旋转体和带发动机的旋转体进行模拟,分别证明了所采用的计算方法对侧向喷流干扰流场和发动机尾喷流求解的能力;其次,开展了侧向喷流与主流在有/无尾喷流影响下的干扰流动数值计算,研究了0°攻角情况下尾喷流给压强分布、压力系数、对称面马赫数及流线、侧向力及力矩放大因子和后弹体流场结构带来的变化。结果表明:尾喷流会大幅提高侧向喷流的效率;尾喷流不会改变侧向喷口上游的流场结构,但对弹体底部、尾舵后缘及侧向喷口下游区域的流场结构影响较大。Aiming at the impact of plume on the flow interaction between rear lateral jet and external flow for missiles,based on 3D computational fluid dynamics(CFD)method,the simulation model is validated using a body of revolution with X-shaped rudder and a body of revolution with rocket motor respectively,and the capability of solving interaction flow and plume is confirmed.Then,numerical simulations of the interaction flow with/without plume are carried out,and the changes of pressure distribution,pressure coefficients,Mach number and streamlines on symmetry plane,amplification factor of lateral force and moment and flow structure around afterbody at 0°angle of attack caused by plume are studied.The results show that the efficiency of the lateral jet can be dramatically improved by the plume,and the flow structure around the upstream area of lateral spout is not changed by the plume,however,it has a great influence on the flow structure around the base,the trailing edge of rudder and the downstream area of lateral spout.

关 键 词：导弹 尾喷流 侧向喷流 干扰 数值研究 直接力装置 

分 类 号：TJ760[兵器科学与技术—武器系统与运用工程] V211.3[航空宇航科学与技术—航空宇航推进理论与工程]