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Heat Transfer Characteristics for non-NewtonianDilatant Fluid in Eccentric Annular Channel(PDF)


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Heat Transfer Characteristics for non-NewtonianDilatant Fluid in Eccentric Annular Channel
Ji Yinlian1Zhang Junbo1Zhang Min2
(1.Taizhou College,Nanjing Normal University,Taizhou 225300,China)(2.School of Energy and Power Engineering,Nanjing University of Science and Technology,Nanjing 210009,China)
FVMcell-based central methoddilatant fluideccentric annular channel
This paper studies dilatant fluid in accordance with Ostwald-de Waele relational formula,with power-law factor greater than 1. It aims to solve the problem of the highly non-linear features of the non-Newtonian fluid viscosity coefficient. Cell-based central method is used for the non-linear viscosity coefficient discretization in unstructured grids. It studies heat transfer of dilatant fluid in eccentric annular channel. The simulation results show that the eccentricity and radius ratio of annular channel can lead to the asymmetrical distribution of circumferential temperature and velocity. Effects of geometric structure of channel on the Nusselt number are far greater than effects of power factor.


[1] 袁世伟,赖焕新. 幂律非牛顿流体的有限体积算法[J]. 华东理工大学学报(自然科学版),2013,39(3):364-369.
YUAN S W,LAI H X. A finite volume method for calculating flows of power-law non-Newton fluids[J]. Journal of East China university of science and technology(natural science edition),2013,39(3):364-369.(in Chinese)
[2]尹析明. 环形套管内非牛顿流体非定常旋转流动谱方法研究[J]. 四川大学学报(自然科学版),2009,46(4):1 016-1 020.
YING X M. Research on analytical approach to time-dependent rotation flow of non-Newtonian fluid in the pap between cylinders[J]. Journal of Sichuan university(natural science edition),2009,46(4):1 016-1 020.(in Chinese)
[3]沈丹丹,朱宏武,丁矿,等. 水下卧式采油树内部环空通道的流动特性分析[J]. 石油机械,2014,42(2):42-44.
SHEN D D,ZHU H W,DING K,et al. Analysis of the flow characteristic of the annular channel in sub sea horizontal christmas tree[J]. China petroleum machinery,2014,42(2):42-44.(in Chinese)
[4]袁祖强,刘建华. 非牛顿流体幂指式流变模型的实验验证[J]. 南京化工大学学报(自然科学版),2001,23(3):60-62.
YUAN Z Q,LIU J H. Verification of power-law model of the non-newtonian fluid with experiments[J]. Journal of Nanjing university of chemical technology(natural science edition),2001,23(3):60-62.(in Chinese)
[5]许彬,王秀春,房萍萍. 偏心圆环管中非牛顿流体流动的数值计算[J]. 河北工业大学学报(自然科学版),2007,36(5):77-82.
XU B,WANG X C, FANG P P. Characteristics of laminar viscous non Newtonian fluid flows in eccentric annular channels[J]. Journal of Hebei university of technology(natural science edition),2007,36(5):77-82.(in Chinese).
[6]NOBARI M R H,MEHRABANI M T. A numerical study of fluid flow and heat transfer in eccentric curved annuli[J]. International journal of thermal sciences,2010,49(2):380-396.
[7]BARTOSIK A. Application of rheological models in prediction of turbulent slurry flow[J]. Flow,turbulence and combustion,2010,84(2):277-293.
[8]FANG P P,MANGLIK R M,JOG M A. Characteristics of laminar viscous shear-thinning fluid flows in eccentric annular channels[J]. Journal of non-Newtonian fluid mechanics,1999,84(1):1-17.
[9]PATANKAR S V. Numerical heat transfer and fluid flow[M]. Washington D.C.:Hemisphere,1980.
[10]ZHANG M. Modeling of radiative heat transfer and diffusion processes using unstructured grid[D]. Cookeville:Tennessee Technological University,2000.
[11]Escudier M P,Gouldson I W. Developments in laser techniques and applications to fluid mechanics[M]. Berlin:Springer,1997.


Last Update: 2017-06-30