【摘要】 针对典型的楔形体飞行器头部,利用在头部单点喷射产生等离子体的方法,研究了等离子体对高速飞行器阻力的影响。采用二维粘性磁流场方程,计算了不同马赫数、不同等离子体数以及无等离子体情况下的流场特性和阻力。介绍了数值模拟方法、研究对象,给出了典型的计算结果,并分析了等离子体喷流减阻的机理。结果表明:等离子体喷流可以有效减少飞行器的阻力,但其减阻的效果与来流马赫数等参数有很大的关系;当马赫数为3时,等离子体减阻可接近30%。更多还原

【Abstract】 The effect of plasma on high speed vehicle drag was investigated by employing a typical wedge-body vehicle nose and the method of plasma injection on a single point.Utilizing two dimensional viscid MHD equations and numerical simulation methods,the flowfield characteristics and drag were predicted for different freestream and plasma parameters,and the mechanism of drag reduction by plasma was analyzed.The results show that plasma injection can reduce drag effectively while depending on the freestream parameters.In this paper,the drag was reduced by 30% at Mach 3.更多还原