Overpressure is widely developed in marine sediments; it not only a critical factor related to hydrocarbon accumulation, but also serious safety issue for oil/gas exploration and exploitation. Although the mechanisms overpressure development sedimentary basins have been intensively studied, some new are proposed with advancements geological investigation, e.g., natural gas hydrate formation mic...

We evaluated the acute (up to 24 h) pathophysiological response to primary blast using a rat model and helium driven shock tube. The shock tube generates animal loadings with controlled pure primary blast parameters over a wide range and field-relevant conditions. We studied the biomechanical loading with a set of pressure gauges mounted on the surface of the nose, in the cranial space, and in ...

To further understand the combustion characteristics of syngas/air, behaviors premixed flame at various hydrogen additions and opening ratios were investigated. The vessel is a half-open rectangular duct 50mm square by 900mm long. shape photographed high-speed camera pressure measured sensor closed end duct. effect two variables on dynamics are considered through analysis evolution overpressure...

Hydrogen refueling stations are one of the key infrastructure components for hydrogen-fueled economy. Skid-mounted hydrogen (SHRSs) can be more easily commercialized due to their smaller footprints and lower costs compared stationary stations. The present work modeled explosions in a skid-mounted station predict overpressures hydrogen-air mixtures investigate protective effects different explos...

The relatively low rates of magma production in island arcs and continental extensional settings require that the volume of silicic magma involved in large catastrophic caldera-forming (CCF) eruptions must accumulate over periods of 105 to 106 years. We address the question of why buoyant and otherwise eruptible highsilica magma should accumulate for long times in shallow chambers rather than e...

Simulation of deflagrations requires accurate modelling transient premixed flames. An initial laminar flame kernel is subjected to progressive stretch by obstacle generated turbulence as it propagates downstream. Large eddy simulation (LES) based surface density models may encounter difficulties when a predefined model constant used for given characteristics. The reliable description wrinkling ...

Overpressure is an important metric of the destructive effect shock wave produced by high explosion. Investigating overpressure on surface essential way for evaluating power explosive device. This study has implications quantitative analyses establishing relationship between parameters reflected using numerical simulation software AUTODYN with different TNT charge mass. The research indicates t...