CAJ | 학술논문

针对含氮1%液化天然气储罐内分层现象，通过建立模型并求解 N-S 方程获得距液面不同高度下温度计算表达式。结合给定储罐及所处环境参数，计算随时间变化储罐内温度分布并绘制温度变化曲线，该表达式所得理论数据与已有实验数据比较符合，与液氢热分层数值模拟结果温度分布趋势比较一致，进而为 LNG 储罐内分层发生翻滚的极限即判据的进一步研究提供理论支持。
침대함담1%액화천연기저관내분층현상，통과건립모형병구해 N-S 방정획득거액면불동고도하온도계산표체식。결합급정저관급소처배경삼수，계산수시간변화저관내온도분포병회제온도변화곡선，해표체식소득이론수거여이유실험수거비교부합，여액경열분층수치모의결과온도분포추세비교일치，진이위 LNG 저관내분층발생번곤적겁한즉판거적진일보연구제공이론지지。
This paper focuses on stratification within the LNG containing 1% Nitrogen vessel,es-tablishes the stratification model,and obtains the formula which calculates the temperature dis-tribution of the liquid phase in the vessel through solving the N-S equations.With the given pa-rameters of the vessel and the environment,the specific temperature is got at specific height in the vessel after a specific period of time,and the temperature curve is drawn.The calculations agree with the temperature distribution trend from the cryogenic liquid hydrogen thermal stratification of numerical simulation results,conform to the experimental data so that it provides theoretical support for further research on criterion of hierarchical LNG tanks roll limit.