Numerical simulation of natural gas leakage and diffusion in residence space under multiple factors

Fire Science and Technology ›› 2021, Vol. 40 ›› Issue (7): 1013-1016.

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Numerical simulation of natural gas leakage and diffusion in residence space under multiple factors

ZHU Jing1，QI Yuan-lei2，XIN Pei-gang3， XU Chun-wen1，ZHANG Jiao4

1. College of Pipeline and Civil Engineering, China University of Petroleum，Shandong Qingdao 266580, China; 2. Dongya Decoration Co., Ltd.，Shandong Qingdao 266580，China; 3. Offshore Oil Engineering (Qingdao) Co., Ltd.，Shandong Qingdao 266580，China; 4. Shandong Wanhao Huayu Engineering Design Limited Company，Shandong Jinan 250000，China

Online:2021-07-15 Published:2021-07-15

Abstract

Abstract: Accidental leakage of natural gas in residential space can cause significant harm to residents. In this paper, CFD simulation is used to analyze the diffusion law, the explosion area and influencing factors of natural gas leakage in typical residential environment and the role of natural ventilation in reducing the risk of explosion is evaluated. In addition, the simulation results are verified by experiments. The simulation results show that flammable clouds accumulate in the upper part of the space and spread to adjacent rooms. Natural ventilation is an effective way to prevent natural gas accumulation and to reduce the risk of leakage.

Key words: indoor gas leakage, natural ventilation, combustible region, diffusion concentration, numerical simulation

ZHU Jing, QI Yuan-lei, XIN Pei-gang, XU Chun-wen, ZHANG Jiao. Numerical simulation of natural gas leakage and diffusion in residence space under multiple factors[J]. Fire Science and Technology, 2021, 40(7): 1013-1016.

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Numerical simulation of natural gas leakage and diffusion in residence space under multiple factors

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