A5047674546- Fire dynamics and safety research
- Fire effects on ecosystems
- Evacuation and Crowd Dynamics
- Combustion and Detonation Processes
- Fire Detection and Safety Systems
- Flame retardant materials and properties
- Combustion and flame dynamics
- Wind and Air Flow Studies
- Thermochemical Biomass Conversion Processes
- Environmental and Industrial Safety
- Aerodynamics and Fluid Dynamics Research
- Traffic and Road Safety
- Advanced Combustion Engine Technologies
- Fire effects on concrete materials
- Transportation Systems and Logistics
- Traffic Prediction and Management Techniques
Changsha University of Science and Technology
2025
Central South University
2017-2024
Traffic accidents occur frequently, causing significant losses to people’s lives and property safety. Accurately predicting the severity level of traffic is great significance. Based on accident data, this study comprehensively considers various influencing factors such as geographical location, road conditions, environment. The data are divided into accident-related categories, weather-related road- environment-related categories. machine learning method improved through integration for...
Densified wood possesses outstanding mechanical properties and serves as a desired construction material for modern timber buildings. However, the limited research on its flame behavior hinders broader applications. The authors of this paper experimentally analytically investigated influence species density horizontal spread behavior. oak densified fir were tested. rate decreased with in both types. Their values close at same density. mass loss (m˙) increase had higher m˙ due to lower lignin...
The emergence of inclined tunnels under natural ventilation has brought many new fire safety issues. smoke movement in the tunnel is affected by chimney effect induced shaft and downstream tunnel. characteristics temperature distribution are different from horizontal tunnels, which worthy further study. A series conditions were carried out an model with a single to investigate characteristics. In this study, longitudinal air inlet velocity used replace wind velocity. Results showed that...
This article is an attempt to reveal the fire extinguishing mechanism under action of pulsed water mist system using method Large Eddy Simulation (LES). The performances with continuous and pulsing discharge modes were numerically investigated by measuring gas temperature, oxygen concentration fire-extinguishing time. simulation results presented that has no obvious advantage over in open space, but a considerable extinguishment performance optimizing interval mode confined space. optimum...
In scenarios of compartment fire, natural smoke exhaust often confronts the challenge environmental wind. this work, a series numerical simulations were conducted to study influences ambient wind speed, location ventilation and fire source on pressure distribution movement in both single multiple fires. The results show that differential increases parabolically with increasing speed under windward-leeward condition. CO2 rate are positively correlated outlet area, which shows an opposite...
By varying tunnel slope, shaft height and fire source location, a series of numerical simulations were conducted to investigate the smoke back-layering length in tilted with vertical shaft. The simulation results verified by corresponding reduced-scale experiments. Five possible exhaust modes tunnels single concluded through flow field analysis. dimensionless relationships between height, distance analyzed. When is located upstream shaft, occurs when slope less than 1.5%. downstream...