摘要
采用CFD软件FLACS建立LNG接收站物理模型和数值模型,模拟LNG接收站罐底部发生蒸气云爆炸的情景。模拟分为气云中心点火和气云边缘点火,得到火焰发展形态、温度分布和超压分布。一般情况下,堵塞度越大、通风条件越差、火焰传播路径越长,爆炸产生的超压越大。爆炸最大超压产生在气云内距离点火源最远的位置。确定蒸气云爆炸产生超压的最大值及其影响因素,为风险评估和接收站的平面布局提供数据依据。
Numerical model of LNG receiving terminal was es- tablished by CFD software FLACS, vapor cloud explosion un- der the LNG tank was simulated. The flame shape, tempera- ture distribution and overpressure distribution were obtained under the conditions of igniting at center or side of the vapor cloud. The more stoppage, bad ventilation and long flame prop- agation lead to the maximum overpressure under normal condi- tion. The biggest overpressure happens at the farthest location from the ignition spot inside the vapor cloud. The maximum o- verpressure and its influence factors of vapor cloud explosion were found to provide theoretical basis for risk assessment and receiving terminal layout.
出处
《消防科学与技术》
CAS
北大核心
2013年第8期834-837,共4页
Fire Science and Technology
基金
中央高校基本科研业务费专项资金资助项目"LNG接收站爆燃风险研究"(13CX06082A)
