液化天然气池火固体火焰模型及预测工具

Research on liquefied natural gas solid flame model and assessment tool

通过对陆上和水上LNG大尺寸火灾实验测试结果进行分析,得到影响LNG池火灾热辐射的关键参数,包括最大燃烧速率、最大表面热辐射能及LNG池火燃烧速率、表面热辐射能、火焰形状和传输率预测模型,并据此开发了基于固体火焰模型的LNG池火热辐射预测工具LNGFHR。与LNGFIRE 3模型的计算结果进行对比,表明LNGFHR在陆上圆形LNG池火灾热辐射预测值与LNGFIRE 3接近;对于水面LNG池火,LNGFHR采用了最新的大尺寸LNG水面池火实验的研究结果,其预测结果大于LNGFIRE 3模型的预测值。

By a review of large-scale LNG fire on land and water, crucial parameters of LNG fire thermal assessment were determined, including maximum mass burning rate, maximum surface emissive power, fire burning rate model, surface emissive power model, fire shape model and transmissivity model. Based on solid flame models, LNGFHR was developed for LNG pool fire thermal assessment. By comparing with LNGFIRE 3 on radiation assessment result, it is showed that predictive ability of LNGFHR model is similar to that of LNGFIRE 3 on land circle LNG pool fire radiation assessment. LNGFHR calculation result is greater than LNGFIRE 3 on water LNG pool fire radiation calculation on account of adopting up to date large-scale LNG fire experiment results on water.