Molecular Dynamic Simulation on the Thermal Conductivity of Nanofluids in Aggregated and Non-Aggregated States

被引：36
|
作者：
Lee, S. L. [1 ]
Saidur, R. [2 ]
Sabri, M. F. M. [1 ]
Min, T. K. [3 ]
机构：
[1] Univ Malaya, Dept Mech Engn, Kuala Lumpur 50603, Malaysia
[2] King Fahd Univ Petr & Minerals, CoRE RE, Dhahran 31261, Saudi Arabia
[3] Univ Sains Malaysia, Sch Phys, Pulau Penang, Malaysia
来源：
NUMERICAL HEAT TRANSFER PART A-APPLICATIONS | 2015年 / 68卷 / 04期
关键词：
LIQUID-SOLID INTERFACE; BROWNIAN-MOTION; ENHANCEMENT; MODEL; MECHANISMS; WATER; NONEQUILIBRIUM; SUSPENSIONS; RESISTANCE; FLOW;
D O I：
10.1080/10407782.2014.986366
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Nanofluids are engineered by suspending nanoparticles in convectional heat transfer fluids to enhance thermal conductivity. This study is aimed at identifying the role of nanoparticle aggregation in enhancing the thermal conductivity of nanofluids. Molecular dynamic simulation with the Green Kubo method was employed to compute thermal conductivity of nanofluids in aggregated and non-aggregated states. Results show that the thermal conductivity enhancement of nanofluids in an aggregated state is higher than in a non-aggregated state, by up to 35%. The greater enhancement in aggregated nanofluids is attributed to both higher collision among nanoparticles and increases in the potential energy of nanoparticles.
引用
收藏
页码：432 / 453
页数：22
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