The nanofluid flows in the channel with linearly varying wall temperature

doi:10.1016/j.csite.2021.101602

	The nanofluid flows in the channel with linearly varying wall temperature
	胡开鑫1); Huang, Yan 3; Zhang, Xin-Yuan 3; Wang, Sheng 3; Chen QS(陈启生)1,2
刊名	CASE STUDIES IN THERMAL ENGINEERING
	2021-12-01
卷号	28 页码:15
关键词	Nanofluids Poiseuille flow Heat transfer Nanoparticle concentration Viscosity stratification
ISSN号	2214-157X
DOI	10.1016/j.csite.2021.101602
通讯作者	Hu, Kai-Xin(hukaixin@nbu.edu.cn)
英文摘要	In many applications of heat exchanger, due to the heat convection, the wall temperature of the channel usually varies along the streamwise direction. The present paper reports the analysis of nanofluid flows in the channel with linearly varying wall temperature. The non-uniform equilibrium fluid medium model proposed by Buongiorno is applied, where the Brownian diffusion and thermophoresis of nanoparticles are considered. The numerical solutions of laminar flows are determined by the iteration method in conjunction with the Chebyshev collocation method. The results show that: (1) there is a Gaussian distribution of nanoparticle concentration in the wall-normal direction for convective cooling, while its standard deviation depends on the Peclet number and the ratio of Brownian diffusivity to thermophoretic diffusivity; (2) there are obvious stratifications for the viscosity and thermal conductivity in the flow; (3) the velocity decreases significantly with the increase of nanoparticle concentration for convective heating, while there is only a little decrease for the velocity in the cold region for convective cooling.
分类号	一类
资助项目	National Natural Science Foundation of China[11872032] ; National Natural Science Foundation of China[11772344] ; Zhejiang Provincial Natural Science Foundation[LY21A020006] ; K. C. Wong Magna Fund ; Marine Biotechnology and Marine Engineering Discipline Group in Ningbo University[422004582]
WOS关键词	HEAT-TRANSFER ENHANCEMENT ; THERMAL-PROPERTIES ; CONVECTION ; VISCOSITY
WOS研究方向	Thermodynamics
语种	英语
WOS记录号	WOS:000720793100023
资助机构	National Natural Science Foundation of China ; Zhejiang Provincial Natural Science Foundation ; K. C. Wong Magna Fund ; Marine Biotechnology and Marine Engineering Discipline Group in Ningbo University
其他责任者	Hu, Kai-Xin
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/88031]
专题	力学研究所_国家微重力实验室
作者单位	1.Chinese Acad Sci, Inst Mech, Key Lab Micrograv, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100190, Peoples R China; 3.Ningbo Univ, Sch Mech Engn & Mech, Key Lab Impact & Safety Engn, Minist Educ, Ningbo 315211, Zhejiang, Peoples R China;
推荐引用方式 GB/T 7714	胡开鑫1),Huang, Yan,Zhang, Xin-Yuan,et al. The nanofluid flows in the channel with linearly varying wall temperature[J]. CASE STUDIES IN THERMAL ENGINEERING,2021,28:15.
APA	胡开鑫1),Huang, Yan,Zhang, Xin-Yuan,Wang, Sheng,&陈启生.(2021).The nanofluid flows in the channel with linearly varying wall temperature.CASE STUDIES IN THERMAL ENGINEERING,28,15.
MLA	胡开鑫1),et al."The nanofluid flows in the channel with linearly varying wall temperature".CASE STUDIES IN THERMAL ENGINEERING 28(2021):15.