Theoretical Analysis and Numerical Study for Spin Jet Formation Performance

• Autorzy: Sun Shengjie , Wang Shuyou , Jiang Jianwei , Li Zhaoting , Yang Hang , Men Jianbing

Identyfikatory

DOI

10.22211/cejem/198429

• Języki publikacji: EN

Abstrakty

EN

Small-caliber shaped charges rely on rotation for flight stability; however, this rotation impacts the jet formation performance, leading to radial dispersion and fragmentation of the jet. This study establishes a theoretical model to analyse the rotating jet formation process, based on classical jet formation theory. A smoothed particle hydrodynamics (SPH) numerical simulation model, calibrated with existing experimental data, was employed to simulate the formation process of rotating jets, and revealed the interplay between the jet’s axial and tangential velocities. Based on these findings, a theoretical analysis model for rotating jet formation was developed under specific assumptions to predict the jet velocity distribution, jet radius distribution, and fracture time. The theoretical results indicate that regardless of the initial angular velocity, the jet does not fracture instantaneously; on the contrary, it fractures progressively from the tip to the tail. The discrepancies between theoretical predictions and numerical simulations for the jet tip velocity and fracture time were 4.2% and 4.2 μs, respectively, validating the accuracy of the theoretical model.

Słowa kluczowe

EN

shaped charge; jet formation theory; rotating jet; numerical simulation

• Wydawca: Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
• Czasopismo: Central European Journal of Energetic Materials
• Rocznik: 2024
• Tom: Vol. 21, no. 4
• Strony: 450--481
• Opis fizyczny: Bibliogr. 38 poz., rys., tab., wykr.

Twórcy

autor

Sun Shengjie

• National Key Laboratory of Explosion Science and Safety Protection, Beijing Institute of Technology, Beijing 100081, PR China

autor

Wang Shuyou

• National Key Laboratory of Explosion Science and Safety Protection, Beijing Institute of Technology, Beijing 100081, PR China
• Tangshan Research Institute, Beijing Institute of Technology, Tangshan 063000, Hebei, China

autor

Jiang Jianwei

• National Key Laboratory of Explosion Science and Safety Protection, Beijing Institute of Technology, Beijing 100081, PR China

autor

Li Zhaoting

• National Key Laboratory of Explosion Science and Safety Protection, Beijing Institute of Technology, Beijing 100081, PR China

autor

Yang Hang

• National Key Laboratory of Explosion Science and Safety Protection, Beijing Institute of Technology, Beijing 100081, PR China

autor

Men Jianbing

• National Key Laboratory of Explosion Science and Safety Protection, Beijing Institute of Technology, Beijing 100081, PR China
• Tangshan Research Institute, Beijing Institute of Technology, Tangshan 063000, Hebei, China

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