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潜热型功能热流体层流强化传热分析新模型 被引量:3

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摘要 建立了分析潜热型功能热流体的层流强化传热的新模型.该模型的主要特征是:(1)应用新推导的潜热型功能热流体定压比热公式;(2)考虑了真实的相变传热过程,即,相变微胶囊与单相工作流体间换热,壁面与两相混合流体间换热;(3)用新建立的轴对称双倒易边界元和有限差分联合的数值方法求解该数理方程.新模型的可靠性用已有实验结果进行了验证.得到了一些新的物理结果,如定压比热在空间与时间随相变传热过程变化的特征,捕获了相变界面随时间推进图像,等等,还数值分析了影响潜热型功能热流体强化传热的几个主要物理因数,对该功能流体强化传热机理获得了一些新认识.
出处 《科学通报》 EI CAS CSCD 北大核心 2004年第13期1234-1240,共7页 Chinese Science Bulletin
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