An explicit model of temperature-dependent thermal conductivity for nanofluids

Abstract

Abstract Nanofluids is a material that has good prospects to increase the efficiency of the heat transfer process. With the addition of small fraction nanoparticles, the thermal conductivity of the nanofluids can increase significantly compared to the fluid base. Although it has excellent application prospects, the study of thermal conductivity models is still a problem. The uniqueness of the characteristics and rapid development of nanofluids experiments make the proposed model continue to undergo validation testing. In this paper, a model of temperature-dependent the effective thermal conductivity of nanofluids is proposed. This model is a development of a previously proposed model that only involves aspects of the fraction of the volume and diameter of nanoparticles. The model construction comes from the modification of the model proposed by Mintsa-Roy-Nguyen-Doucet, which is equipped with aspects of the nano-convection mechanism as proposed by Jang-Choi.