期刊论文详细信息
JOURNAL OF HAZARDOUS MATERIALS 卷:271
A new numerical formulation of gas leakage and spread into a residential space in terms of hazard analysis
Article
Nagaosa, Ryuichi S.
关键词: Flammable gas leakage;    Extended two-compartment model;    Gas density;    Computational fluid dynamics (CFD);    Hazard analysis;   
DOI  :  10.1016/j.jhazmat.2014.02.033
来源: Elsevier
PDF
【 摘 要 】

This study proposes a new numerical formulation of the spread of a flammable gas leakage. A new numerical approach has been applied to establish fundamental data for a hazard assessment of flammable gas spread in an enclosed residential space. The approach employs an extended version of a two-compartment concept, and determines the leakage concentration of gas using a mass-balance based formulation. The study also introduces a computational fluid dynamics (CFD) technique for calculating three-dimensional details of the gas spread by resolving all the essential scales of fluid motions without a turbulent model. The present numerical technique promises numerical solutions with fewer uncertainties produced by the model equations while maintaining high accuracy. The study examines the effect of gas density on the concentration profiles of flammable gas spread. It also discusses the effect of gas leakage rate on gas concentration profiles. (C) 2014 The Authors. Published by Elsevier B.V.

【 授权许可】

Free   

【 预 览 】
附件列表
Files Size Format View
10_1016_j_jhazmat_2014_02_033.pdf 3430KB PDF download
  文献评价指标  
  下载次数:2次 浏览次数:1次