Molecular simulations of R141b boiling flow in micro/nano channel: Interfacial phenomena

被引：36

作者：

Dong, Tao ^{[1
]}

Yang, Zhaochu

Wu, Huilong

机构：

[1] Beijing Inst Technol, Sch Mechatron Engn, Beijing 100081, Peoples R China

[2] Nanjing Univ Sci & Technol, Sch Mech Engn, Nanjing 210094, Peoples R China

[3] Xi An Jiao Tong Univ, State Key Lab Multiphase Flow Power Engn, Xian 710049, Peoples R China

[4] China Elect Technol Grp Corp, Nanjing Elect Devices Inst, Nanjing 210038, Peoples R China

来源：

ENERGY CONVERSION AND MANAGEMENT | 2006年 / 47卷 / 15-16期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

non-equilibrium molecular dynamics (NEMD); vapor-liquid interface; microfluidic; flow boiling;

D O I：

10.1016/j.enconman.2005.12.007

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Boiling flow in microchannels provides a promising approach for electronic cooling, while the understanding of microfluidic phase transition is still very limited. Based on an annular flow model analysis, non-equilibrium molecular dynamics (NEMD) simulations of the real fluid Freon R141b boiling flow in micro/nano channels were performed to investigate micro and nano scale liquid-vapor interfacial phenomena. The simulations were performed in a cuboid cell in which a temperature gradient was set at both ends, with the 2CLJD (two center Lennard-Jones potential with embedded dipole) potential selected as the potential model. The temperature distribution, heat flux, density and surface tension profiles of the simulated cell were presented and discussed. The results show that the characteristics of the liquid-vapor interface depend heavily on the saturated temperature and the superheat degree. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：2178 / 2191

页数：14

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