LNG储罐泄漏模型计算、模拟及实验研究

Calculation,Simulation and Experimental Study on Leakage Model of LNG Tank

利用数值计算模型中的板模型、Fluent模拟、现场实验3种方式研究LNG储罐泄漏爆炸极限扩散范围,进行对比分析。板模型计算得出,当泄漏量为0.12 kg/s时,爆炸范围约为3.47～11.39 m。Fluent模拟得出泄漏量为0.04 kg/s时,爆炸范围约为1.25～9.6 m;泄漏量为0.12 kg/s时,爆炸范围约为3.6～12.0 m;泄漏量为0.20 kg/s时,爆炸范围约为5.0～14.0 m。实验得出泄漏量为0.12 kg/s时,爆炸范围约为3.5～11.5 m。板模型、Fluent模拟、现场实验3种方式对比得出,泄漏量为0.12 kg/s时,3种方式的LNG泄漏扩散体积分数范围基本一致。

The of leakage of LNG tank ding the plate model in explosion limit diffusion range is studied by three ways incluthe numerical calculation model, the Fluent simulation and the field experiment, and a comparative analysis is made. The plate model calculation shows that when the leakage rate is 0.12 kg/s, the explosion range is about 3.47 to 11.39 m. The Fluent simulation shows that when the leakage rate is 0.04 kg/s, the explosion range is about 1.25 to 9.6 m; when the leakage rate is 0.12 kg/s, the explosion range is about 3.6 to 12.0 m; and when the leakage rate is 0.20 kg/s, the explosion range is about 5.0 to 14.0 m. The field experiment shows that when the leakage rate is 0.12 kg/s, the explosion range is about 3.5 to 11.5 m shows that when The comparison of the three ways the leakage rate is 0. 12 kg/s range of LNG leakage diffusion volume fraction in ways is basically the same. , the three