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Numerical Research on the Influence of Deborah Number on Flow and Heat Transfer of Maxwell Fluid in a Tube with Laminar Pulsating Flow

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摘要 The flow and heat transfer characteristics of Maxwell fluid in a pipe under pulsating pressure gradient were studied. The governing equations were made dimensionless. The Rubin boundary condition was adopted. The flow field was solved theoretically and the temperature field was obtained using finite volume method. A general model suitable for various fluctuating characteristics and physical parameters was established. The Deborah number(De) was used to characterize the fluidity of the fluid. The influence of De on flow and temperature fields was evaluated. The Nusselt number and start-up process of Maxwell fluid were studied. Results showed that the influence of De on flow field was greater than that on temperature field. The effect of De on Nusselt number was irregular and related to the oscillation parameters. The over-shooting amplitude and oscillation time of axis center velocity in start-up flow grow larger with De.
作者 WANG Zhipeng CHENG Shuhao ZHUO Yuqun
机构地区 Key Laboratory for Thermal Science and Power Engineering of the Ministry of Education Beijing Engineering Research Center for Ecological Restoration and Carbon Fixation of Saline–alkaline and Desert Land China Institute of Atomic Energy
出处 《Journal of Thermal Science》 SCIE EI CAS CSCD 2020年第4期972-981,共10页 热科学学报（英文版）
基金 sponsored by China National Key Research and Development Program via Project No.2018YFB0605105。
关键词 Maxwell fluid pulsating flow Hagen-Poiseuille law Deborah number start-up flow
分类号 TK12 [动力工程及工程热物理—工程热物理]
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Journal of Thermal Science
2020年 第4期

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