纳米流体介质导热机理初探

纳米流体导热行为具有许多奇异的特性，结合纳米流体的特点和微尺度传热学原理，研究了 热流在纳米颗粒内波动式及非限域的热传导特性、纳米颗粒在悬浮液内的布朗运动、颗粒- 液体界面上液膜层原子的有规则排列、以及纳米颗粒的团簇形成及移动等四方面因素对纳米 流体导热系数的影响. 关键词： 纳米流体 导热

Study on the mechanism of heat conduction in nanofluid medium

The heat conduction behaviour in a nanofluid fluid medium has many abnormal properties. Combined with the analysis based on microscale heat transfer theory and the physicochemical behaviours of nanofluid, the mechanism of heat conduction in nanofluid has been studied. The effects of nonlinear heat transfer in nanoparticle, micro convection are caused by the Brownian movement of nanoparticles, congregation of nanoparticles, and orderly array of liquid molecules at the interface between the nanoparticle surface and the base fluid.