平板模型对液化石油气连续泄漏扩散模拟分析与探讨

对目前主要的气体泄漏扩散模拟计算模型进行比较分析,选择平板模型用于液化石油气连续泄漏扩散模拟计算,运用假设中型和大型泄漏的计算实例结果,通过与挪威船级社(DNV)开发的SAFETI风险评价软件的计算结果进行对比分析,可以得出:在静风条件下,平板模型对液化石油气连续泄漏扩散模拟的准确性高。随着云团扩散密度降低,平板模型计算偏差逐步加大,且计算偏差随风速的增大而变大,因而利用平板模型进行模拟计算的结果应予修正。

Simulation Analysis on Continuous Leakage and Diffusion of LPG Based on Slab Model

Based on the comparative analysis of the main calculation models for gas leakage and diffusion simulation,the slab model Was selected to make a simulated calculation of the continuous leakage of liquefled petroleum gas(LPG).For the two situations of medium leakage and large leakage,a comparison was made between the result calculated by slab model and that gotten by SAFETI risk assessment software,developed by Det Norske Veritas(DNV).The analysis shows that,in the calm wind conditions.the simulation result of the leakage and diffusion of LPG with slab model is more accurate;but with the deereasing of clouds density,the calculation deviation with slab model gradually increases,and the deviation will increase with the increasing of wind speed.So,the simulation result gained by slab model must be revised.