旋转弹丸马格努斯力数值计算  

Numerical Calculation of Magnus Force Acting on Spinning Projectile

作　　者：薛帮猛[1] 杨永[1] 

机构地区：[1]西北工业大学翼型叶栅空气动力学国防科技重点实验室,西安710072

出　　处：《弹箭与制导学报》2005年第2期85-87,共3页Journal of Projectiles,Rockets,Missiles and Guidance

摘　　要：旋转弹丸、导弹的设计和弹道计算都要求准确计算弹丸的侧向力、力矩-马格努斯力、力矩。采用时间相关法求解N-S方程(Navier-Stokesequations)来模拟某旋转弹丸的流场,以给定物面切向速度的无滑移边界条件来实现对旋转的模拟,计算了弹丸的马格努斯力、力矩,分析了其与转速、攻角的关系,计算结果与实验结果吻合得很好。It is desired during spinning projectile and missile design and trajectory calculation that the side force and moment, Magnus force and moment, must be predicted precisely. Navier-Stokes equations are solved with time-dependent method to simulate the flow field around a spinning projectile in this paper. Rotation is implemented through the no slip boundary conditions for viscous flow with giving the velocity distribution on the wall. Magnus force and moment are calculated, and the relationships between the Magnus effects and spin rate or attack angle are investigated. The computational results have a good agreement with the experimental results.

关 键 词：马格努斯力 旋转弹丸 数值计算 N-S方程 时间相关法 弹道计算 边界条件 切向速度 计算结果 侧向力 力矩 模拟 求解 

分 类 号：O241[理学—计算数学] TS75[理学—数学]