Numerical Simulation on Dynamic Laval Nozzle under Different Detonation Model

Abstract:

In conventional charge structure, the shell of charge’s containment is normally closed, with no explosive. When initiating charge, shell expanding to the outward, rupturing and eventually spreading out which was driven by the charge, this don’ have a guiding role to the detonation product flow. To further enhance the control of charge’s detonation product and energy flow, realizing the effective use of detonation products. The thesis put forward a structure design of filling thin-layer explosive in multi-layer shell, by initiating thin-layer explosive to control the deformation of shell, obtaining a approximately function with Laval Nozzle structure which can control the gas product when charge detonation. The thesis put forward a structure that including multi-layer explosive shell, establishing a numerical simulation model. Analysis the difference of shell’ deformation on different initiation method, provides a design references for further engineering application.

• Periodical: Applied Mechanics and Materials (Volumes 799-800)
• Pages: 651-655
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.799-800.651
• Online since: October 2015
• Authors: Jun Ting Yin, Gang Li*
• Keywords: Detonation, Dynamic, Laval Nozzle, Numerical Simulation, Shell

References

[1] Foelsch K. The analytical design of an axially symmetric laval nozzle for a parallel and uniform jet[J]. Journal of the Aeronautical Sciences (Institute of the Aeronautical Sciences), 2012, 16(3).

DOI: 10.2514/8.11758

[2] Lu S, Chen L, Du C, et al. Experimental study of hydrogen production from reforming of methane and ammonia assisted by Laval nozzle arc discharge[J]. International Journal of Hydrogen Energy, (2014).

DOI: 10.1016/j.ijhydene.2014.10.011