Thermal Conductivity of Nanofluid with Magnetic Nanoparticles

摘要：

The thermal conductivities of Fe3O4 and Al2O3 nanofluids with the viscous base fluid composed by various fluids are investigated in this study. In order to change the viscosity of mixed fluid, the volumetric fractions between two fluids in the mixed fluid are varied. Measured values of thermal conductivity of nanofluids gradually approach the values predicted by Maxwell equation with increasing the viscosity. Our measured results demonstrate that Brownian motion of suspended magnetic particles could be an important factor that enhances the thermal conduc-tivity of nanofluids, but it has little effect for suspended Al2O3 nanoparticles. It also indicates that the conduction part of prediction model can be obtained from Maxwell prediction.

作者: T.-H.Tsai L.-S.Kuo P.-H.Chen C.-T.Yang

作者单位: Department of Mechanical Engineering,National Taiwan University,Taiwan Department of Mechanical and Computer-aided Engineering,St.Johns University,Taiwan

会议类型: 国际会议

会议名称: Progress in Electromagnetics Research Symposium 2009(2009年电磁学研究新进展学术研讨会)(PIERS 2009)

会议地点: 北京

会议语种:英文

页码: 1344-1347

在线出版日期: 2009-03-23（万方平台首次上网日期，不代表论文的发表时间）