高速旋转弹丸马格努斯效应数值研究  

A Numerical Investigation of Magnus Effect for High-speed Spinning Projectile

作　　者：雷娟棉 李田田[1] 黄灿[1] 

机构地区：[1]北京理工大学宇航学院,北京100081

出　　处：《兵工学报》2013年第6期718-725,共8页Acta Armamentarii

摘　　要：为了研究高速旋转弹丸在飞行过程中产生马格努斯效应的气动机理,本文以三维N-S方程为基本方程,采用滑移网格技术,对弹丸在高速旋转状态下的绕流场进行了数值模拟。给出了马格努斯力和力矩系数随攻角的变化规律,所得结果与实验数据符合很好,并从流场结构对马格努斯效应产生的机理进行了分析。结果表明,弹体周向压力和切应力分布的畸变、边界层畸变、大攻角下涡的非对称畸变是马格努斯效应产生的主要原因,且船尾对弹体马格努斯力和力矩的影响很大。Based on projectile was carrie implemented through angle of attack were date. The generated presented. mechanism The computation results have a good agreement of Magnus effect were analyzed by the flow field show that asymmetric distortion of circumferential layer distortion, distortional eddy generated Magnus effect. Boat-tail has a great influence surface pres high angle Magnus with the structure. experimental The results sure and shear stress distribution, boundary of attack are the fundamental reasons for force and moment.

关 键 词：流体力学 滑移网格 高速旋转弹丸 马格努斯效应 数值模拟 

分 类 号：V211[航空宇航科学与技术—航空宇航推进理论与工程]