山洞油库油气扩散蔓延的数值仿真  

Numerical Simulation of Oil Gas Diffusion in Underground Oil Depot

作　　者：周毅[1] 杜扬[1] 赵晓刚[1] 

机构地区：[1]中国人民解放军后勤工程学院军事供油工程系,重庆401311

出　　处：《系统仿真学报》2013年第12期2999-3003,共5页Journal of System Simulation

基　　金：重庆市自然科学基金(CSTC;2009BA6019);火灾与爆炸安全防护重庆市重点实验室资助项目(CSTC;2010CA0005)

摘　　要：山洞油库主坑道油气扩散蔓延的研究对油库防爆抑爆安全工作有重要的指导意义。针对山洞油库实际主坑道结构形式,建立起了油气扩散蔓延的CFD数值仿真模型。根据山洞油库主坑道中油气扩散蔓延的湍流特征,采用Realizable k-ε双方程湍流模型对湍流进行模拟,采用有限体积法对仿真模型的控制方程进行离散,并用PISO算法对控制方程进行求解。仿真结果与模拟实验结果较吻合,得出模拟主坑道受限空间中油气扩散蔓延的四个阶段性规律与特性,分析了进气口处油气扩散蔓延的分叉特殊现象。为山洞油库安全管理、应急抢险等工作提供理论依据。The study of oil gas diffusion is very important for the explosion-proof, explosion suppression and other relative safety works in the main tunnel of underground oil depot. Based on the actual structure of the main tunnel in an underground oil depot, the numerical simulation model of oil gas diffusion was established. Realizable k-e two-equation model was used to the simulation of turbulence according to the turbulence trait of oil gas diffusion. The Finite Volume Method （FVM） was utilized to the discretization of control equation and the PISO algorithm was applied to solve the control equation. The numerical simulation meets the experimental results very well. The oil gas diffusion in the confined space of underground oil depot can be divided into four stages. The characteristic of the bifurcation phenomenon of oil gas diffusion near the velocity inlet is obtained. Such studies provide a theoretical guidance for the safety management and emergency rescue work in underground oil depot.

关 键 词：山洞油库 主坑道 受限空间 油气 扩散蔓延 数值仿真 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术] TE88[自动化与计算机技术—计算机科学与技术]