LNG储罐泄漏扩散模型和研究方法分析

Analysis of leakage diffusion model and research method of LNG tank

通过对现场试验、风洞试验以及数值模拟等三种泄漏扩散方法的比较,认为数值模拟方法在LNG储罐泄漏扩散问题的研究上无论是可行性还是计算精度方面都具有优势。进一步分析通常使用的模拟LNG泄漏的数学模型,发现高斯模型较适合用于LNG泄漏问题的扩散模拟计算。利用高斯烟团模型进行了算例分析,模拟得到LNG储罐泄漏扩散规律。

Based on the analysis of three methods of studying the leakage diffusion of LNG storage tanks,such as field tests,wind tunnel tests,and numerical simulations,it is believed that numerical simulation method has advantages in studying the calculation accuracy and feasibility of leakage diffusion of the LNG storage tank.Further analysis of the commonly used mathematical model of simulating the LNG leakage diffusion revealed that the Gaussian model is more suitable for the simulation of LNG leakage.The Gaussian puff model is used tOanalyze the diffusion of LNG storage tank as an example.