中文摘要：

对喷流干扰研究中的数值模拟精度进行了讨论,结合相关实验重点分析了不同计算格式、限制器形式、网格拓扑及流动形态（层流与湍流）对喷流干扰流场结构、气动力特性和压力分布特性的影响。在上述研究的基础上,进一步对比分析了计算与实验所得到的有喷与无喷之差及干扰因子之值。研究表明,目前CFD与实验之差主要表现在轴向力和俯仰力矩,法向力、有喷与无喷之差及干扰因子之值计算与实验两者基本一致,出现差别的原因主要是对大细长比弹体后体压力分布模拟存在一定差异。

英文摘要：

In this paper some numerical simulations are conducted on complex flow involving interactions with lateral jets,and corresponding analyses are made.In order to simulate the complex flow phenomena related to lateral jet interaction accurately,the NND scheme with high resolution is adopted.Furthermore a LU-SGS algorithm is also used to accelerate the converging process.Combined with corresponding experiments,the influences of many factors including different difference schemes,types of limiters,topologies of grids and flow models（laminar or turbulence） on interaction flow structures and pressure distribution are investigated.And then the difference of aerodynamic forces between with jet and without jet and pitching moment amplification factors obtained by CFD or experiment are carried out.It is demonstrated that there exit some difference between CFD and experiment for axial force and pitching moment,but the results is almost the same for normal force,the difference of aerodynamic forces between with jet and without jet and pitching moment amplification factors.The main cause for this disagreement is that there is some uncertainty for the pressure distribution along aft body surface of this slender missile with high fineness ratio.