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- Title
Prediction of Back-layering Length and Critical Velocity with Lithium-ion Battery Car Fires in Tunnel.
- Authors
Zhenpeng Bai; Xiaohan Zhao; Huaitao Song; Yang Zhang; Haowei Yao; Jin Zhang
- Abstract
The purpose of this article is is to investigate the critical speed and back-layer length of smoke propagation during fires of lithium-ion battery vehicles in tunnels. The combustion of lithium-ion battery vehicles in tunnels is numerically simulated. This article uses heat release rate (HRR) and ventilation rate to predict the length of smoke counterflow in tunnel fires with new energy vehicles. Temperature is an important parameter for calculating smoke counterflow. The temperature in the tunnel is measured by thermocouples. The results showed that dimensionless critical velocity influences dimensionless HRR. The numerical simulation results indicated that there is a certain correlation between the HRR variable, which corresponds to the dimensionless smoke counterflow length and the critical speed in the tunnel. This article proposed a computational model for predicting the length of smoke counterflow. This paper contributes to the prevention of tunnel fires and reduction of social and economic losses. Therefore, this paper guides the propagation of smoke under the roof of lithium-ion battery vehicle fires in tunnels.
- Subjects
CRITICAL velocity; AUTOMOBILE batteries; LITHIUM-ion batteries; RAILROAD tunnels; ELECTRIC vehicles; TUNNELS; HEAT release rates
- Publication
IAENG International Journal of Applied Mathematics, 2024, Vol 54, Issue 6, p1033
- ISSN
1992-9978
- Publication type
Article