Lightweight WebVR Real-Time Simulation of Large-Scale Fire Scenario in Metro

doi:10.16182/j.issn1004731x.joss.21-1198

Abstract

Abstract:

Large-scale fire simulation requires a huge amount of calculation and excellent rendering capabilities, which poses a challenge to the realization of a real-time online fire simulation system on the Web. A lightweight Web-based real-time simulation technology framework for subway station fire is proposed. Based on the simplification of calculation formulas in the field of fire safety and the analysis of the impact of smoke prevention facilities in subway stations, a two-stage smoke diffusion model based on smoke bay is proposed to achieve the smoke diffusion trend calculation; a Web-side multi-granularity particle emitter framework at the smoke bay level is proposed to complete the rendering of flames and smoke shapes, and to realize the real-time calculation and visualization process based on the Web. The experimental verification shows that the simulation results of the method in this paper are similar to the simulation results of the professional fire simulation software. And the method in this paper can simulate the fire online in real time by opening the Web page, which has a significant advantage in convenience.

Key words: fire simulation, smoke diffusion, WebVR, lightweight dynamic modeling, real-time rendering

CLC Number:

TP391.9

Yang Li, Huijuan Zhang, Chenchen Ge, Kang Xie, Zhuang Li, Jinyuan Jia. Lightweight WebVR Real-Time Simulation of Large-Scale Fire Scenario in Metro[J]. Journal of System Simulation, 2023, 35(3): 646-657.

Figures/Tables 16

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方法	运行准备	模拟时间	模拟结果
本文方法	网页加载时间约5 s	实时模拟无需等待	趋势正确但细节不足
FDS	下载安装客户端	约12 h	趋势正确且细节丰富

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