1.中北大学 机电工程学院,山西 太原 030051
2.南京理工大学 机械工程学院,江苏 南京 210094
邮箱:20230206@nuc.edu.cn
收稿:2026-01-26,
修回:2026-09-01,
录用:2026-05-13,
网络首发:2026-09-07,
纸质出版:2026-09-30
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王铭杰,张克斌,段继等.攻角与横流耦合作用下尾翼式超空泡射弹倾斜入水空化非对称与尾拍特性[J].兵工学报,2026,47(09):260098.
WANG Mingjie,ZHANG Kebin,DUAN Ji,et al.Cavitation Asymmetry and Tail-Slap Characteristics of a Finned Supercavitating Projectile during Oblique Water Entry under the Combined Effect of Angle of Attack and Crossflow[J].ACTA ARMAMENTARII,2026,47(09):260098.
王铭杰,张克斌,段继等.攻角与横流耦合作用下尾翼式超空泡射弹倾斜入水空化非对称与尾拍特性[J].兵工学报,2026,47(09):260098. DOI: 10.12382/bgxb.2026.0098.
WANG Mingjie,ZHANG Kebin,DUAN Ji,et al.Cavitation Asymmetry and Tail-Slap Characteristics of a Finned Supercavitating Projectile during Oblique Water Entry under the Combined Effect of Angle of Attack and Crossflow[J].ACTA ARMAMENTARII,2026,47(09):260098. DOI: 10.12382/bgxb.2026.0098.
为揭示攻角与横流耦合作用下尾翼式超空泡射弹倾斜入水的空化演化与动力学响应机理,基于雷诺平均Navier-Stokes方程、剪切应力输运
k-ω
(
k
为湍动能,
ω
为比耗散率)湍流模型、Schnerr-Sauer空化模型及流体体积多相流模型,构建了射弹倾斜入水的多相流数值模型,系统研究了射弹以100 m/s的速度、45°入水角倾斜入水时的空化特性与动力学响应。研究结果表明:横流对倾斜入水射弹的空化形态影响显著,正横流加剧空化的非对称性与尾拍失稳,而特定负横流(-2 m/s)则可缓解因倾斜入水引起的空化非对称性,提升弹体稳定性;攻角的正负影响空泡不对称的朝向,且攻角绝对值越大,非对称程度与尾拍强度越高。当攻角与横流同时存在(即耦合)时,存在俯仰力矩的叠加或抵消效应:同方向耦合会放大空化的非对称性并加剧失稳,反方向耦合则有助于缓解空化非对称、增强射弹入水稳定性。
The cavitation evolution and dynamic response mechanisms of a finned supercavitating projectile during oblique water entry under the combined effects of angle of attack and crossflow are investigated. This paper establishes a multiphase numerical model based on the RANS equations, SST
k-ω
turbulence model, Schnerr-Sauer cavitation mo
del, and VOF multiphase model. The cavitation characteristics and dynamic response of the projectile entering water at a velocity of 100 m/s and an angle of 45° are systematically investigated. The results indicate that the crossflow has a significant influence on the cavitation morphology of the projectile during oblique water entry: the positive crossflow exacerbates the cavitation asymmetry and tail-slap instability, while a specific negative crossflow (-2 m/s) mitigates the asymmetry of cavitation induced by oblique water entry, thereby enhancing the stability of the projectile. The positive and negative angles of attack also affect the orientation of cavity asymmetry, and the larger the absolute value of the angle of attack, the greater the degree of asymmetry is, and the higher the tail-slap intensity is. The superposition or cancellation effects of pitching moment occurs when both the angle of attack and crossflow are present. Coupling in the same direction amplifies the asymmetry of cavitation and instability, whereas coupling in the opposite directions alleviates the asymmetry of cavitation and enhances the stability of the projectile during water entry.
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