Abstract：As an innovative heat transfer fluids, nanofluids attract great attention because of its excellent heat transfer properties. Research Progress in the preparation methods of nanofluids, the measurement methods of thermal conductivity, the mechanism of thermal conductivity improvement and thermal conductivity models. Then the thermal conductivity enhancement mechanism of nanofluids, research progress of thermal conductivity models are highlighted and discussed. Finally, an outlook for the future development in thermal conductivity models of nanofluids is also given. It is suggested that it is necessary to further explore the potential mechanism leading to the diversity of research results, and select a reasonable and appropriate method to conduct comprehensive and in-depth simulation study on the thermal conductivity model, so as to form a unified theoretical system that can accurately predict the thermal conductivity of all nanofluids.
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2021, Vol. 28 