a novel mathematical model has been developed to aid the formulation of emulsion explosives. this mathematical model calculated heat of explosion, oxygen balance and raw material cost as a function of explosive ingredients, and the solution of the mathematical model was obtained by a ms excel program. the effects of the different content of nh4no3, nano3, h2o, and span-80 and composite fuel oil...

The pulsation of the bubbles resulting from underwater explosions can lead to severe damage structure ship’s hull, and even its sinking. To study mechanism a simplified hull girder (SHG) subjected near-field explosion bubble, Coupled Eulerian–Lagrangian (CEL) method based on verifications calculation accuracy was used simulate 11 SHG structures. sagging bend SHGs analyzed perspective plastic hi...

Various problems concerning the effects of the boundaries of the ocean on the propagation of pressure waves In the ocean are considered. The propagation of a transient pressure wave In a wedge shaped region of fluid Is treated. This Is the model chosen to describe the situation In which an underwater explosion takes place In a coastal ocean region which Is characterized by a strongly sloping bo...

The dynamic process of an underwater explosion (UNDEX) bubble in the vicinity deformable structures is a complex phenomenon that has been studied by many researchers. UNDEX transient problem results highly distorted and large deformation structure. previous work introduced various solutions for studying interaction between nearby widely solved combination boundary element method (BEM) finite (F...

Although the cavitation phenomenon in underwater explosion has been researched for more than 100 years, phase transition models based on mass and heat exchange between liquid its vapor phases have only established past decade. In this study, secondary was first captured by a four-equation system. The bulk near free surface induced numerically investigated, three typical cases were investigated ...