State Key Laboratory of Explosion Science and Safety Protection

Damage-ignition mechanism of composite energetic materials with different densities under multi-pulse loading

Ignition of composite energetic materials (CEMs) may occur under multi-pulse loading, involving a complex interplay between damage and hotspot accumulation. The ignition mechanism is not clear due to the heterogeneous structure and complexity of the loading. In this study, multi-...

Coupling mechanism of internal polarization evolution and 3D thermal behavior in lithium-ion batteries under high-rate discharge

The spatial heterogeneity of multi-physics fields induced by high-rate discharge affects the safety performance of large-format lithium-ion batteries (LIBs). In this work, Quasi-4D electrochemical-thermal (ECT) coupled model is developed for lithium-ion battery to analyze the spa...

Lattice Boltzmann Modeling of Droplet Impact on a Superhydrophobic Ridge

ABSTRACT The impact dynamics of droplets on a single rectangular superhydrophobic ridge are systematically investigated using the lattice Boltzmann method. The effects of ridge width, droplet deviation, and Weber number on droplet deformation and breakup are examined through exte...

A Gas–Solid Two-Phase Mechanistic Model for Predicting the Minimum Ignition Energy of Explosive Dust Clouds

Minimum ignition energy (MIE) is a key parameter for characterizing the ignition sensitivity and explosion hazard of explosive dust clouds, yet its experimental determination is hazardous and mechanistic prediction remains limited. In this study, a gas–solid two-phase mechanistic...

Towards a Balance between Functionality and Stability: Energy‐Safety Synergistic Mechanisms and Prospects in Perovskite Energetic Materials

self-assembly structure. Their core advantage lies in the ability to precisely control energy levels and safety through molecular-level design. However, the inherent contradiction between high energy and high safety is a key bottleneck restricting their development. This article...

Dynamic energy-release model for reactive composite jets impacting spaced plate-enhanced sealed chamber

Reactive composite jets combine the penetration capability of metallic jets with the secondary energy release of reactive materials, but a unified model that links jet formation, penetration, reaction evolution, and aftereffect overpressure remain incomplete. This study proposes...

A battery life prediction method based on graph neural network assisted by deep reinforcement learning

With the wide utilization of new energy batteries, the accurate prediction of battery life has become an urgent technical issue that needs to be addressed. Studies have developed battery life prediction models based on correlation analysis for feature extraction. This study intro...

Asymmetric deflagration characteristics of hydrogen-blended natural gas under multiscale conditions: The influence of ignition location

Hydrogen-blended natural gas (HBNG) is receiving increasing attention as a practical low-carbon gaseous fuel for the transition of natural-gas-based energy systems, but its vented deflagration behavior in partially confined spaces remains insufficiently understood, especially whe...

Self-consistent fragmentation in dynamically dense turbulent fibre suspensions

Fragmentation of slender fibres by turbulence controls length distributions in many natural and industrial suspensions, yet most theories assume a prescribed carrier flow, and treat fibres as dilute and dynamically passive. Here, we develop a self-consistent kinetic description f...

Experimental and numerical investigation of ignition effects on explosion temperature fields in residential buildings

This study systematically investigates the temperature evolution characteristics of methane explosions in a full-scale residential building under various ignition scenarios through a combined approach of full-scale experiments and CFD simulations. A 280 m 3 full-scale experimenta...