The characteristics of cavitation and atomization induced by underwater explosion near a free surface have been investigated the multiphase fluid model based on two-fluid phase transition. This numerical method can provide transition between liquid its vapor phases during shock wave rarefaction propagation at any time in explosion. detailed density, pressure, vapor, volume fraction contours zon...

underwater acoustic wireless sensor network (uawsn) use acoustic signalsto transmit data. acoustic signals in underwater environment have high bit errorrate, long propagation delay and limited bandwidth. another constraint in uwasnis energy. due to these constraints, design of energy and bandwidth efficient andpropagation delay aware mac protocol is a great challenge in uwasn.underwater sensor ...

Abstract This paper aims to study the effects of different water depths on properties emulsion explosives by use an explosive underwater explosion test system for hydrostatic pressure under condition 0.2% sodium nitrite sensitized blasting model experiments. The results showed that experiment designed simulation equipment can be used in performance sample compression state explosion. It better ...

The computation of gas bubble-free surface interaction entails a time-stepping algorithm whereby a linear system is solved at each time-iteration. In our investigation, the linear systems are derived from a desingularized boundary integral formulation and are poorly conditioned. This leads to poor convergence rates when Krylov subspace methods are used to solve these systems. The convergence ra...

history of underwater diving dates back to antiquity. breath-hold technique in diving was known to the ancient nations. however, deep diving progressed only in the early decades of the 19 th century as the result of advancements in efficient underwater technologies which subsequently led to invention of sophisticated sets of scuba diving in the 20 th century. currently, diving is performed for ...