车载LNG气瓶的扩散与爆炸分析

The Diffusion and Explosion Analysis of Vehicle LNG Cylinder

针对车载LNG气瓶气体泄露扩散问题,通过数值分析方法模拟了泄露气体燃烧和爆炸模式下的热辐射区域大小;为预测LNG气体在不同风速、云层覆盖率、外界温度和湿度参数下爆炸模式的热辐射区域,通过对不同环境下的正交试验结果进行分析,构造了线性回归方程,并通过预测值与实验值的对比,验证了该回归方程在预测LNG气体泄露扩散危险区域方面的有效性。论文的研究为LNG气瓶气体的泄露事故的应对提供了参考依据。

In the case of gas leakage and diffusion of vehicle LNG gas, the heat radiation area of the gas combustion and explosion model was simulated by numerical analysis method. For the prediction of LNG gas in different wind speed, cloud coverage, outside temperature and humidity parameters under explosion mode of heat radiation area, through analyzed the results of orthogonal tests in different environment, constructed linear regression equation, and through contrasted predicted value and experimental value, verified the regression equation to predict effectiveness of LNG gas leakage and diffusion in danger zone. The research of this paper provides reference for the LNG gas leakage accident.