基于FLACS的船对船LNG加注过程中的泄漏扩散分析

Leakage Diffusion Analysis of Ship-to-ship LNG Bunkering Process Based on FLACS

为了量化船对船LNG加注过程中LNG软管泄漏所产生的可燃气体分布,为船对船加注作业管理办法提供理论依据,采用三维CFD气体扩散分析软件FLACS建立加注船、受注船以及作业码头模型,进行加注软管泄漏扩散分析,计算加注船与受注船在不同水位差、泄漏口径、气相/液相对扩散结果的,仿真结果显示,可燃气体云分布范围受泄漏口径、风向因素影响较大,遮挡物的分布可能会导致独立可燃蒸气云团的出现,具有一定的潜在风险。

In order to quantify the distribution range of combustible gas produced by LNG leakage during STS LNG bunkering,and provide a theoretical basis for STS bunkering management methods,the 3D CFD software FLACS was used to model the bunkering ship,receiving ship and the jetty,analyze the leakage diffusion,and calculate the results of different water level,leak diameters and gas/liquid phase.The simulation results showed that the distribution range of the combustible gas cloud is greatly affected by the leakage diameter and wind direction;the distribution of obstructions may cause the appearance of independent combustible vapor clouds,which has certain potential risks.