轻量级WebVR地铁站大规模火灾情景实时仿真研究

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

系统仿真学报 ›› 2023, Vol. 35 ›› Issue (3): 646-657.doi: 10.16182/j.issn1004731x.joss.21-1198

轻量级WebVR地铁站大规模火灾情景实时仿真研究

李阳(), 张惠娟, 葛晨晨, 谢康, 李庄, 贾金原()

同济大学软件学院，上海 201800

收稿日期:2021-11-23 修回日期:2021-12-29 出版日期:2023-03-30 发布日期:2023-03-22
通讯作者: 贾金原 E-mail:876056236@qq.com;jyjia@tongji.edu.cn
作者简介:李阳(1997-)，男，硕士生，研究方向为计算机图形学、Web3D。E-mail：876056236@qq.com
基金资助:
国家自然科学基金面上项目(6207071897);国家自然科学区域联合基金重点项目(U19A2063)

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

Yang Li(), Huijuan Zhang, Chenchen Ge, Kang Xie, Zhuang Li, Jinyuan Jia()

School of Software Engineering, Tongji University, Shanghai 201800, China

Received:2021-11-23 Revised:2021-12-29 Online:2023-03-30 Published:2023-03-22
Contact: Jinyuan Jia E-mail:876056236@qq.com;jyjia@tongji.edu.cn

摘要/Abstract

摘要：

大规模火灾仿真需要庞大的计算量和卓越的渲染能力，对Web端实时在线火灾仿真系统的实现提出了挑战。提出了一套轻量级Web端地铁站火情实时仿真技术框架。基于火灾安全领域中的计算公式整理简化，分析地铁站防烟设施影响，提出了基于防烟分区的两阶段烟雾扩散模型，实现烟雾扩散趋势计算；提出了Web端的防烟分区级多粒度粒子发射器框架，完成火焰和烟雾形态的渲染，实现基于Web端实时计算和可视化过程。试验验证表明：本文方法与专业火灾模拟软件模拟结果在大体趋势上相近，并且打开网页即可实时在线对火灾进行模拟，在便捷性上拥有显著优势。

关键词: 火灾仿真, 烟雾扩散, WebVR, 轻量级动态建模, 实时渲染

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

中图分类号:

TP391.9

李阳, 张惠娟, 葛晨晨, 谢康, 李庄, 贾金原. 轻量级WebVR地铁站大规模火灾情景实时仿真研究[J]. 系统仿真学报, 2023, 35(3): 646-657.

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.

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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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轻量级WebVR地铁站大规模火灾情景实时仿真研究

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

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