Numerical simulation of nanofluids based on power-law fluids with flow and heat transfer

3rd International Conference on Energy Materials and Environment Engineering

能源学;生态环境科学

Li, Lin^1 ; Jiang, Yongyue^2 ; Chen, Aixin^3

School of Mathematics and Physics, University of Science and Technology Beijing, Beijing

100083, China^1

Beijing Time Technologies Co. Ltd., Kaituo Road 17, China^2

Department of Mathematics and Computer Science, Hengshui University, HEBEI

053000, China^3

关键词: Brownian diffusion;    Circular grooves;    Concentration equations;    Enhancement of heat transfer;    Flow and heat transfer;    Numerical results;    Power law fluid;    Power law index;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/61/1/012106/pdf
DOI  :  10.1088/1755-1315/61/1/012106

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In this paper, we investigate the heat transfer of nanofluids based on power-law fluids and movement of nanoparticles with the effect of thermophoresis in a rotating circular groove. The velocity of circular groove rotating is a constant and the temperature on the wall is kept to be zero all the time which is different from the temperature of nanofluids in the initial time. The effects of thermophoresis and Brownian diffusion are considered in temperature and concentration equations, and it is assumed that the thermal conductivity of nanofluids is a function of concentration of nanoparticles. Based on numerical results, it can be found that nanofluids improve the process of heat transfer than base fluids in a rotating circular groove. The enhancement of heat transfer increases as the power law index of base fluids decreases.