Determination of nanolayer thickness for a nanofluid

作者：Tillman Pei^*; Hill James M

来源：International Communications in Heat and Mass Transfer, 2007, 34(4): 399-407.

DOI：10.1016/j.icheatmasstransfer.2007.01.011

• nanofluid
• nanoparticle
• nanolayer
• thermal conductivity
• mathematical model
• heat conduction

Recent core-shell-medium models as a modification of the traditional effective medium theories for explaining the enhanced thermal conductivity of nanofluids are semi-empirical. Generally, the resulting thickness and conductivity of the nanolayer both have to be chosen to match the measured thermal conductivity of the nanofluid. Here, we attempt to find a more systematic procedure to determine the nanolayer thickness and the thermal conductivity profile within the nanolayer. An expression for the nanolayer thickness is derived by manipulation of the three basic heat conduction regions. Comparison of the estimated thermal conductance with known experimental data and thermal diffusion length are made.

• 出版日期2007-4