Slip-Flow and Heat Transfer of a Non-Newtonian Nanofluid in a Microtube

doi:10.1371/journal.pone.0037274

CORC > 北京大学 > 工学院

	Slip-Flow and Heat Transfer of a Non-Newtonian Nanofluid in a Microtube
	Niu, Jun ; Fu, Ceji ; Tan, Wenchang
刊名	plos one
	2012
关键词	GRAETZ PROBLEM FLUIDS
DOI	10.1371/journal.pone.0037274
英文摘要	The slip-flow and heat transfer of a non-Newtonian nanofluid in a microtube is theoretically studied. The power-law rheology is adopted to describe the non-Newtonian characteristics of the flow, in which the fluid consistency coefficient and the flow behavior index depend on the nanoparticle volume fraction. The velocity profile, volumetric flow rate and local Nusselt number are calculated for different values of nanoparticle volume fraction and slip length. The results show that the influence of nanoparticle volume fraction on the flow of the nanofluid depends on the pressure gradient, which is quite different from that of the Newtonian nanofluid. Increase of the nanoparticle volume fraction has the effect to impede the flow at a small pressure gradient, but it changes to facilitate the flow when the pressure gradient is large enough. This remarkable phenomenon is observed when the tube radius shrinks to micrometer scale. On the other hand, we find that increase of the slip length always results in larger flow rate of the nanofluid. Furthermore, the heat transfer rate of the nanofluid in the microtube can be enhanced due to the non-Newtonian rheology and slip boundary effects. The thermally fully developed heat transfer rate under constant wall temperature and constant heat flux boundary conditions is also compared.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000305336300088&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Multidisciplinary Sciences; SCI(E); PubMed; 28; ARTICLE; 5; e37274; 7
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/153980]
专题	工学院
推荐引用方式 GB/T 7714	Niu, Jun,Fu, Ceji,Tan, Wenchang. Slip-Flow and Heat Transfer of a Non-Newtonian Nanofluid in a Microtube[J]. plos one,2012.
APA	Niu, Jun,Fu, Ceji,&Tan, Wenchang.(2012).Slip-Flow and Heat Transfer of a Non-Newtonian Nanofluid in a Microtube.plos one.
MLA	Niu, Jun,et al."Slip-Flow and Heat Transfer of a Non-Newtonian Nanofluid in a Microtube".plos one (2012).