LNG貯槽を対象とした矩形容器内密度成層流体の熱流動数値解析に関する研究

抄録

The demand of LNG is extending in recent years and requirement to store LNG with different density in the same tank is increasing. In that situation double-diffusive convection and phenomenon called as “Rollover” will occur in LNG tank by the heat input and LNG tank will be damaged by large amount of BOG (Boil off Gas). We must consider the rollover phenomenon when we design LNG tank and plant system. The purpose of this study is to establish analytical technology which can predict rollover. We calculated double-diffusive convection in the two and three dimensional numerical analysis and evaluated the numerical analytical results concerning the density and the temperature field by comparison to subscale tank experiment. We achieved that numerical analysis qualitatively realized experiment of double-diffusive convection.