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Numerical simulation of laminar flow and heat transfer in shellside of longitudinal-flow heat exchanger.

Wu Jinxing(Research Center of Heat Energy Engineering, Zhengzhou University, Zhengzhou), Wang Dingbiao, Dong Qiwu, et al.  
This article presents the mathematical model of laminar flow and heat transfer in shellside of the longitudinal-flow heat exchanger(LFHE), which is based on Computational Fluid Dynamics(CFD) and Numerical Heat Transfer(NHT) along with simplification and hypotheses about working conditions of LFHE. Arithmetic operator-split method and two order time precision discrete format are applied so as to improve astringency and calculating precision. The discrete nonlinear governing equations are educed with 3-dimension equal parameter element, and the numerical simulation program is developed. Flow field and temperature field in shellside of LFHE are simulated to obtain the fluid flow state and heat flow distribution. The influence of different parameter of the supporting structure on fluid flow and heat transfer is analyzed. The computed results are identical to the experimental data, and this means the model can effectively simulate fluid flow and heat transfer in shellside of LFHE.
【Fund】: 国家“九五”重大科技攻关项目 ( 96 -A0 1-0 1-0 7)
【CateGory Index】: TQ021
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