Mechanism of enhanced convective heat transfer coefficient of nanofluids

作者：Xie Hua Qing^*; Chen Li Fei

来源：Acta Physica Sinica, 2009, 58(4): 2513-2517.

• nanofluids
• heat transfer coefficient
• thermal dispersion

Nanofluids have enhanced heat transfer capacity compared to conventional fluids. In the present paper, the effects of the thermophysical properties and thermal dispersion on the convective heat transfer coefficients of nanofluids have been investigated. The analytical results show that the effective thermal conductivities of a nanofluid is enhanced with the addition of nanopaticles into the base fluid. The collisions between nanoparticles, fluid molecules, and the wall of flow-tube are intensified, leading to enhanced mixing agitation and turbulence. Improved thermophysical properties and thermal dispersion result in the convective heat transfer coefficient enhancement of nanofluids.

• 出版日期2009-4
• 单位上海第二工业大学