摘要
通过对相变材料微胶囊、纳米颗粒和基液之间传热过程的仿真计算,分析了纳米颗粒的数目、粒径和热导率对微胶囊与流体之间传热Nu的影响.进而采用数值方法研究了吸附纳米颗粒后,微胶囊-流体传热系数的提高对相变过程的影响,研究结果为纳米颗粒的强化传热机制提供了部分理论依据.
By numerical simulation of the heat transfer among nanoparticles,microencapsulated phase change material（MPCM） and liquid,the factors such as nanoparticle amount,diameter and thermal conductivity,which affect the MPCM-liquid heat transfer Nusselt number,were analyzed.When MPCM absorbed nanoparticles,the effect of the increase of the MPCM-liquid heat transfer coefficient on the phase change period was also studied numerically,providing a theoretical basis for the mechanism of enhancing the heat transfer with nanoparticle.
出处
《航空动力学报》
EI
CAS
CSCD
北大核心
2011年第9期1947-1952,共6页
Journal of Aerospace Power
基金
国家自然科学基金(50436020)
中国博士后科学基金(20100470187)
关键词
相变材料微胶囊
相变
纳米颗粒
纳米流体
强化传热
microencapsulated phase change material
phase change
nanoparticle
nanofluid
enhanced heat transfer
