Hydrogen as an energy carrier is a very promising alternative fuel in the future. Accidental
hydrogen explosions remain one of the major concerns in hydrogen energy utilization and …

The accidental release of hydrogen into enclosures can result in a flammable mixture with
concentration gradients and possible deflagration-to-detonation transition (DDT). This …

In this study, wall roughness is generated by inserting a Shchelkin spiral with different wire
diameter (δ) and pitch (L s). Roughness is defined as the ratio δ/L s. The effect of tube wall …

Gas explosions in the underground coal mines where the obstacles exist can cause
significant damage. A current knowledge gap in methane safety research concerns the effect …

An experimental investigation on explosion behavior of non-uniform methane/air explosion
in obstructed duct with different blockage ratios is conducted. The methane/air mixture that …

In this study, a three-dimensional, high fidelity LES of a fully premixed, lean hydrogen-air
deflagration, in a confined and obstructed channel is performed. The experimental …

An inhomogeneous hydrogen-air mixture is induced once hydrogen leakage occurs, and an
explosion may be triggered due to an accidental ignition with sufficient strength. The effects …

Hydrogen is a key pillar in the global Net Zero strategy. Rapid scaling up of hydrogen
production, transport, distribution and utilization is expected. This entails that hydrogen …

Flame acceleration (FA) and deflagration-to-detonation transition (DDT) in combustible
premixed gases is a complex process involving the flow and combustion phenomena …

This work aims at investigating the inhomogeneous hydrogen cloud explosion in unconfined
spaces. The influences of concentration gradient and ignition position on the explosion were …