Theoretical and Experimental Study on Detonation Wave Propagation in Cylindrical High Explosive Charges with a Wave-shaper

• Autorzy: Pan J. , Zhang X. , He Y. , Deng Q. , Guan Z.

Identyfikatory

DOI

10.22211/cejem/65004

• Języki publikacji: EN

Abstrakty

EN

The use of a cylindrical high-explosive charge with a wave-shaper is an efficient way to obtain an ultra-high pressure and a convergent detonation wave. An analysis of flow fields corresponding to the regular and Mach reflection of detonation waves in a cylindrical high-explosive charge with a wave-shaper is presented in this paper. The pressure, flow velocity and triple point growth angle of the Mach stem were calculated. The Mach stem height was also determined by using the modified Whitham method. The results show that the Mach stem height rises from zero at the critical angle of Mach reflection and changes to the Chapman-Jouguet detonation state with the propagation of the detonation waves. Shock indentation experiments were conducted, in which a wave-shaper was used in a cylindrical high-explosive charge to form Mach reflection detonation waves. The results showed that the discrepancy between the experimental results and the theoretical calculations was less than 15%, which proves the validity of the proposed theoretical model.

Słowa kluczowe

EN

high explosive; detonation wave; Mach reflection; wave-shaper; Whitham method

• Czasopismo: Central European Journal of Energetic Materials
• Rocznik: 2016
• Tom: Vol. 13, no. 3
• Strony: 658--676
• Opis fizyczny: Bibliogr. 26 poz., rys., tab.

Twórcy

autor

Pan J.

• School of Mechanical Engineering, Nanjing University of Science and Technology, Xiaolingwei 200, Nanjing 210094, China

autor

Zhang X.

• School of Mechanical Engineering, Nanjing University of Science and Technology, Xiaolingwei 200, Nanjing 210094, China

autor

He Y.

• School of Mechanical Engineering, Nanjing University of Science and Technology, Xiaolingwei 200, Nanjing 210094, China

autor

Deng Q.

• School of Mechanical Engineering, Nanjing University of Science and Technology, Xiaolingwei 200, Nanjing 210094, China

autor

Guan Z.

• School of Engineering, University of Liverpool, Brownlow Street, Liverpool L69 3GQ, UK

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