CAJ | 학술논문

利用焓法建立壳管式相变材料蓄热装置的数学模型，使用数值模拟的凝固/融化模型模拟了石蜡融化的相变过程。在考虑液相区自然对流情况下得到了蓄热装置与热媒体耦合问题的温度场随时间的变化情况，并分析了相变界面的变化规律和不同运行参数下的温度场的变化情况。得出热流体的温度对相变过程起主要作用，热流体的流速的影响则相对较小的结论，这对壳管式相变蓄热的计算和相变蓄热装置的设计具有一定的参考价值。
이용함법건립각관식상변재료축열장치적수학모형，사용수치모의적응고/융화모형모의료석사융화적상변과정。재고필액상구자연대류정황하득도료축열장치여열매체우합문제적온도장수시간적변화정황，병분석료상변계면적변화규률화불동운행삼수하적온도장적변화정황。득출열류체적온도대상변과정기주요작용，열류체적류속적영향칙상대교소적결론，저대각관식상변축열적계산화상변축열장치적설계구유일정적삼고개치。
In this paper, the enthalpy method is used to establish the mathematical model of the shell and tube phase-change heat storage device, using the solidification/melting model in FLUENT simulates the phase change process of paraffin melting. Taking into account the natural convection in liquid region, temperature field in the coupled problem of heat storage device and thermal media over time is obtained. Variation of phase change interfaces and temperature field in different operating parameters are analyzed. As a result, the temperature of thermal fluid plays a major role in the phase change process, while the speed of thermal fluid has a relative small influence, which has reference value for the design of the shell and tube phase-change heat storage device.