Modified Gaussian Model for Natural Gas Steady-State Diffusion

摘要：

Diffusion of natural gas leakage failure will cause potential hazards, such as the waste and economic loss, and even serious casualties. Until now, theres no proper model to predict the natural gas diffusion, especially the proper one for the complex terrain and weather conditions. Therefore, it is urgent to investigate and develop an applicable mathematical prediction model for natural gas diffusion under complicated conditions. Gaussian diffusion model has usually been used to study the process of gas diffusion. However, it does not reflect the true process of natural gas diffusion due to its deficiency. This paper presents a modified Gaussian diffusion model to overcome its shortage, by considering the velocity, density, concentration, buoyancy, initial eruption and temperature of the leaked gas. The diffusion behavior of natural gas is analyzed under conditions of different wind velocity and pressure, using the modified Gaussian diffusion model. The numerical results show that the new model is clearly more tally with the actual situation than the old one.

关键词： natural gas steady-state diffusion Gaussian model numerical simulation

作者: YANG Yan LI Zili ZHANG Zibo

作者单位: College of Transport & Storage and Civil Engineering, China University of Petroleum, Qingdao 266555, Shandong, China

会议类型: 国际会议

会议名称: The 2010 International Symposium on Safety Science and Technology(2010 安全科学与技术国际会议)

会议地点: 杭州

会议语种:英文

页码: 1198-1203

在线出版日期: 2010-10-26（万方平台首次上网日期，不代表论文的发表时间）