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论文类型：期刊论文

发表时间：2016-08-02

发表刊物：NUMERICAL HEAT TRANSFER PART B-FUNDAMENTALS

收录刊物：SCIE、EI、Scopus

卷号：70

期号：2

页面范围：152-163

ISSN号：1040-7790

摘要：The flow and heat transfer characteristics of nanofluids are investigated by nonequilibrium molecular dynamics simulations. Both the effect of chaotic movements of nanoparticle (CMN) on flow properties and its resulting heat transfer enhancement are analyzed. Results show that compared with the base fluid, the effective thermal conductivity of nanofluids is increased, and the increase ratio in the shear flow field is much higher than that in the zero-shear flow field. Based on the models built in this paper, the contributions of increased thermal conductivity and CMN to the heat transfer enhancement of nanofluids are 49.8-68.6% and 31.4-50.2%, respectively.