Experimental study of detonation of large-scale powder–droplet–vapor mixtures

Optimization of Ejection Characteristics for Twice-Detonating Device in Double-Event Fuel-Air Explosive with High Drop Velocity

“…However, with the demand for the application of dynamic explosives in fields such as national defense, research on dynamic explosive characteristics has become a hot topic. Bai et al [21] studied the formation of the dynamic cloud and detonation effect at a low drop velocity by using the air-drop method (the TDD is located at the center of the deceleration parachute canopy). The motion trajectory of the TDD and the factors influencing the detonation point were analyzed, through which the distribution range of the detonation point was estimated.…”

Explosively driven hierarchical particle jetting

“…Particle jetting during the explosive or shock dispersal of particles has been widely observed in nature and many military applications, such as volcanic eruption (Kieffer, 1981), explosion of landmines (Rigby et al, 2018), thermobaric explosion (Ritzel et al, 2009;Bai et al, 2018), high-speed intruder striking granular media, and particle jets impacting targets (Shi et al, 2017;Huang et al, 2010), etc. A typical configuration involves particle rings or shells dispersed by the explosion of central charges (Milne et al, 2010;Ripley et al, 2011;David et al, 2012;Xue et al, 2013;Milne et al, 2014;Ripley and Zhang, 2014;Frost et al, 2017aFrost et al, , 2017bBai et al, 2018;Loiseau et al, 2018;Pontalier et al, 2018;Marr et al, 2018). The resultant expanding cloud of disseminated materials comprises of large particle agglomerates which rapidly protrude to finger-or spike-like particle jets as shown in Fig.…”

Heterogeneous/particle-laden blast waves

“…In a large-scale experimental study, Bai et al [54] investigate the detonation of large droplet clouds generated by the explosive dispersal of a metalized slurry. The dispersal process exhibits jet formation, although casing fracture effects may influence the jet scale.…”