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Abstract
The convective heat transfer performance of the rib-element approach in the channel is influenced by the transverse rib profile. In present work, a nonlinear multi-parameter optimization method based on inversion optimization is proposed and further used to obtain the optimal rib profile in a rectangular channel. Firstly, four conventional profiles as the original ribbed channel were selected to obtain the convective heat transfer performance of the channel by experiment and numerical solution; secondly, several control points were selected along the profile, and the polar radius was updated, and curve fitting was carried out. The results show that the inversion optimization can optimize the rib profile to improve the convective heat transfer performance. As the number of control points increases, the optimized profile changes hardly. The inversion optimization yields a similar optimized profile regardless of the original rib profile. With the increase of original rib height, the enhanced heat transfer performance of optimized profile is better. For the ribbed channel with original height 0.4 × channel height, as the Reynolds number increases from 6000 to 33,000, the performance evaluation criteria of the optimized profile increase by 14.94% to 21.2% compared with the original triangular profile.
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Notes on contributors
Xuguang Yang
Xuguang Yang is a Ph.D. candidate the School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, China. His main research is concerned with numerical simulations and experimental tests in inverse problem and inversion optimization. Other scientific interests are related to heat dissipation of electronic devices and heat exchanger design.
Shiyu Zhang
Shiyu Zhang is a Postgraduate student at the School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, P R China. His main research is concerned with numerical simulation and experimental tests in heat dissipation of electronic devices and heat exchanger design.
Chunhua Min
Chunhua Min is a Professor in the School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, China; Vice Dean of School of Energy and Environmental Engineering, Hebei University of Technology; Director of Key Laboratory of Thermal Science and Energy Clean Utilization of Hebei Province; National first-class professional leader of energy and power engineering. His research interests include problems of heat transfer theory and technology; heat dissipation of electronic devices, heat exchanger design and optimization; industrial energy saving: energy saving technology and equipment of natural gas heat utilization, system and process; numerical simulation: CFD and NHT methods and applications; renewable energy: hydrogen energy and fuel cells; energy system: comprehensive energy system, intelligent energy.
Kun Wang
Kun Wang is a Professor in the School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, China. Deputy Director of Hebei Key Laboratory of Thermal Science and Energy Clean Utilization Technology. His research interests include problems of the engineering thermal physics problems in solar thermal power generation: optimization of mirror field, innovative configuration of heat absorber, optimization of thermal cycle construction; heat transfer enhancement theory and technology; efficient heat storage mechanism and technology; and thermal management of high-power solid-state lasers.
Yuanhong Fan
Yuanhong Fan is a lecturer in the School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, China. He conducts research in the field of Heat Transf. Eng. with the following issues: supercritical fluid; engineering thermal physics problems in solar thermal power generation; heat transfer enhancement theory and technology.