Fast parameterized fractal modeling of active heat transfer channel. (5th June 2022)

• Record Type: Journal Article
• Authors: Chen, Wenjiong; Men, Zhichao; Liu, Shutian
• Is Part Of: Applied thermal engineering. Volume 209(2022)
• Publication Date: 2022-06-05
• Subjects: Active heat transfer -- Fractal channel -- Parameterized modeling -- Control point -- Fractal network; Heat engineering -- Periodicals; Heating -- Equipment and supplies -- Periodicals; Periodicals; 621.40205
• DOI: 10.1016/j.applthermaleng.2022.118297
• Languages: English
• ISSNs: 1359-4311

Abstract

Highlights: A unified parameterized modeling method for 3 types of fractal channels is presented. Heat transfer performance's effects of aspect ratio and channels types are studied. The aspect ratio has important effect on the performance of the fractal channel. The channel type has obvious influence on the performance of fractal channel. The method can be used to develop high-end equipment with high heat flow. Abstract: This paper presents a fast parameterized modeling method for fractal channel and constructs a unified parametric model for Y-shaped, V-shaped, T-shaped fractal channels. This parametric model establishes the relationship between multiple parameters (levels ratio, bifurcation level, pipe diameter ratio, bifurcation angle, aspect ratio) and performance of fractal channel. Parameterized modeling method can reduce repetitive workload and time, improve efficiency. Meanwhile, parametric model allows for a more comprehensive study, and it is important for reduce the occasionality of results. Using the parameterized modeling method, the aspect ratio and fractal channel type are numerically studied. The numerical study of the aspect ratio reveals that with the increase of aspect ratio, Nusselt number decreases, the peak temperature rises and then falls, and the pressure drop first decreases and then increases. The numerical study of fractal channel types shows that the V-shaped channel has the best cooling performance and Y-shaped channel has the best flow performance. Compared to the T-shaped channel, Nusselt number of V-shaped channel increases by 11.29%∼19.74%, the thermal resistance of V-shaped channel decreases by 8.18%∼19.73%, and the pressure drop of Y-shaped channel decreases by 51.04%∼61.75%. The fractal channel parametric model can be applied not only for parameter studies, but also for parameter optimization.