阳台燃气管道泄漏扩散模拟研究

Simulation Study on Leakage and Diffusion of Gas Pipeline on the Balcony

为研究住宅阳台燃气管道泄漏发生后的室内泄漏燃气扩散规律以及建筑开窗条件对燃气扩散的影响,利用ICEM建立典型建筑物几何模型并进行网格划分,应用Fluent软件分别模拟位于住宅阳台内燃气管道断裂后,居室内不同开窗工况下燃气泄漏扩散规律以及可燃气云分布区域。结果表明:在产生建筑内风场通路的开窗工况下,扩散形成的可燃气云聚集范围更小,此时室内形成的爆炸区域主要集中在厨房外侧的顶部。

In order to research the gas diffusion law of indoor leakage after the leakage of gas pipeline from the balcony of the residence and the influence of the opening conditions of the building on the gas diffusion,a typical geometric model of the building is established and the grid is divided by using ICEM,and Fluent software is used to simulate the indoor gas leakage diffusion law and the distribution area of the flammable gas cloud after the fracture of the gas pipeline in the balcony of the residence under the different opening condition.The results show that under the window opening condition,the flammable gas cloud formed by diffusion is smaller,and the explosion area formed in the room is mainly concentrated on the top of the outside of the kitchen.