旋转弹丸马格努斯力矩计算
Magnus Moment Computation of Spinning Projectiles
DOI: 10.12677/IJFD.2023.114012, PDF,   
作者: 谢立军：彩虹无人机科技有限公司，北京；张婷婷, 刘 周, 杨云军：中国航天空气动力技术研究院，北京
关键词: 旋转；弹丸；马格努斯；DDES；M910；Spinning； Projectiles； Magnus； DDES； M910
摘要: 出于提高飞行稳定性的目的，弹丸在飞行过程中通常采用绕体轴旋转的飞行方式。精确计算由于旋转产生的马格努斯力和力矩，对旋转弹箭设计、弹道计算和稳定性研究都至关重要。本文的主要目的是比较RANS湍流模型和DDES湍流模型在旋转弹箭马格努斯力矩计算上的适用性。数值模拟了高速旋转的 M910弹丸，计算结果表明：对于马格努斯力矩，在亚声速和跨声速范围内RANS方法计算的结果与试验有很大的差异，DDES混和法与试验吻合较好，规律性较DES方法更好。RANS方法和DDES混合方法的主要差异在于尾迹流动，RANS方法得到的是定常尾迹，而DDES混合方法得到是非定常尾迹。
Abstract: In order to improve the flight stability of a projectile，the projectile usually rotates around its body axis during flight. Accurate calculation of Magnus forces and moments due to rotation is crucial for the design, trajectory calculation, and stability research of rotating projectiles. The main purpose of this article is to compare the applicability of the RANS turbulence model and the DDES turbulence model for numerical simulation of Magnus moments. The numerical simulation of a high-speed rotating M910 projectile was conducted. The calculation results showed that for the Magnus moment, in the subsonic and transonic velocity ranges, the RANS method calculated results were significantly different from the experimental results, while the DDES hybrid method was in good agreement with the experimental results, and had better regularity compared to the DES method. The main difference between the RANS method and the DDES hybrid method is the wake flow. The RANS method produces a steady wake, while the DDES hybrid method produces an unsteady wake.
文章引用：谢立军, 张婷婷, 刘周, 杨云军. 旋转弹丸马格努斯力矩计算[J]. 流体动力学, 2023, 11(4): 131-140. https://doi.org/10.12677/IJFD.2023.114012

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