控温、系统温度和外载荷对纳米通道中水流性质的影响  

Effects of temperature control, system temperature and external load on properties of water flow inside nanochannel

作　　者：刘桦[1] 孙仁[1] LIU Hua;SUN Ren(MOE Key Laboratory of Hydrodynamics,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学水动力学教育部重点实验室,上海200240

出　　处：《水动力学研究与进展（A辑）》2020年第6期719-725,共7页Chinese Journal of Hydrodynamics

基　　金：国家自然科学基金项目(11672182)。

摘　　要：该文采用非平衡分子动力学模拟的方法,研究了控温方式、系统温度和外载荷对纳米管道中水流的密度、温度和流速的径向分布的影响。控温方式的不同,会导致纳米管道的热传递方式不同,进而影响管道中水流的热传递和速度;系统温度和外载荷在不同控温方式下会对管道中的水流造成不同的影响。该文综合以上三种因素,发现高外载荷作用下,纳米管道的壁面温度会对水流性质产生较大的影响。In this paper, the effects of temperature control pattern, system temperature and external loads on the radial distribution of density, temperature and flow velocity of water inside a nanotube are studied using the method of non-equilibrium molecular dynamics. Different temperature control patterns will lead to distinct heat transfer behaviors for the nanotube, and further affect the heat transfer and current velocity of the internal water;the system temperature and external loads will bring about different impacts on the flow of water within the nanotube as per changing the temperature control pattern. The paper simultaneously considers the above three parameters and thus finds that under a large external load, the temperature on the nanotube wall will have a significant influence on the properties of an inner flow of water.

关 键 词：分子动力学 控温方式 系统温度 外载荷 

分 类 号：O552.4[理学—热学与物质分子运动论]