MOLECULAR DYNAMICS METHOD TO DETERMINE MECHANISM OF HEAT TRANSFER ENHANCEMENT USING NANOFLUIDS

摘要：

This paper reports a numerical investigation on the micro-mechanism of heat transfer enhancement using nanofluids. Realistic molecular models of nanofluids with well-dispersed particles were developed and thermal conductivities were calculated by molecular dynamics method. The calculation results showed considerable enhancement of thermal conductivity using nanofluids compared to base liquid. The molecular dynamics simulations also revealed possible reasons for the enhancement. The well distributed molecular layering of liquid molecules between the liquid and particle interface and the effects of micro convection caused by Brownian motion of nanoparticles were proposed to be the key factors in understanding thermal properties of nanofluids. Our findings are consistent with the predictions of modified Maxwell theory as well as with recent experimental results on nanofluids of similar types.

作者: Wenzheng Cui Jizu Lv Minli Bai Xiaojie Li

作者单位: School of Energy and Power Engineering Dalian University of Technology Dalian, China, 116024 The State Key Laboratory of Structural Analysis for Industrial Equipment Dalian University of Techno

会议类型: 国际会议

会议名称: The Ninth Asian Thermophysical Properties Conference(第九届亚洲热物理性能会议 ATPC 2010)

会议地点: 北京

会议语种:英文

页码: 149-153

在线出版日期: 2010-10-19（万方平台首次上网日期，不代表论文的发表时间）