Thermal-hydraulic performance of flat-plate microchannel with fractal tree-like structure and self-affine rough wall

Xu, Lianlian; Xu, Yao; Gu, Haoshuang; Qiu, Shuxia; Mujumdar, Arun S.; Xu, Peng

doi:10.1080/19942060.2022.2153174

Cited by 8 publications

(3 citation statements)

References 48 publications

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“…In the following, we will introduce the geometric structure of the single damaged tree-like bifurcation network (see Figure 1b), which is made up of "point to line" Y-shaped networks. In our model, we suppose that each branch in the bifurcation networks is a cylindrical tube, and the roughness and the thickness of the tube wall are ignored [25]. Figure 1b illustrates the utilization of l k and d k to denote the length and diameter, respectively, of the kth branching level (where k ranges from 0 to m).…”

Section: Fractal Characteristics Of Porous Mediamentioning

confidence: 99%

“…The tree-like bifurcation network structure exhibits distinct transport characteristics; therefore, it has attracted the interest and attention of a large number of scholars, and it has been widely used in related practical applications, such as microelectronic chip cooling systems and production engineering, etc. [24,25]. Chen and Cheng [26] discussed a comparative analysis to examine the distinctions between traditional parallel pipes and rectangular tree-like bifurcation networks in the context of heat convection.…”

Section: Introductionmentioning

confidence: 99%

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Research on Effective Thermal Conductivity in Porous Media Embedded with Randomly Distributed Damaged Tree-like Bifurcation Networks

Shao,

Guo,

Wang

et al. 2023

Fractal Fract

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Due to the complexity of the microstructure of porous media, it is of great significance to explore the heat transport mechanism in porous media in many engineering applications. In this study, an expression for effective thermal conductivity (ETC) of porous media embedded with randomly distributed damaged tree-like bifurcation networks is derived based on the theory of thermodynamics and fractal features of tree-like bifurcation networks. We investigate the effect of heat conduction and heat convection in porous media embedded with randomly distributed damaged tree-like bifurcation networks on the ETC of the porous media. It is found that our fractal model has good consistency with the existing available experimental data. In addition, the influence of the microstructural parameters of the model on heat transfer in the porous media is analyzed in detail. The research results can provide significant theoretical guidance for the development and design of heat transfer systems.

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Section: Fractal Characteristics Of Porous Mediamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Research on Effective Thermal Conductivity in Porous Media Embedded with Randomly Distributed Damaged Tree-like Bifurcation Networks

Shao,

Guo,

Wang

et al. 2023

Fractal Fract

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“…Xu et al 30 modeled the tree fractal microchannel and established a numerical evaluation system for the thermal performance of the tree fractal microchannel. They proposed a two-dimensional tree-like microchannel optimization method based on minimizing flow resistance, and showed that the optimal continuous diameter ratio of the symmetrical binary structure under volume constraints follows Murray's law.…”

mentioning

confidence: 99%

Study on the water transport performance of the fractal tree-like structure of nonwoven cotton fabrics

Shi,

Chen,

Wang

et al. 2024

Textile Research Journal

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Fractal branching networks are structures that are ubiquitous in nature, possessing multiple transport characteristics, and have been the subject of long-term attention by many researchers. Currently, in the field of textiles, research on the ability of tree-like structures to enhance the water transport property of fabrics is mostly focused on the thickness direction of the fabric. However, there is little research on the liquid water transfer rate in the horizontal direction. In this article, the water transport performance of liquid water in tree-like fractal nonwoven fabrics with different shapes (tree-like and rectangular) was investigated, and the liquid water transport rate was measured using the horizontal wicking method. It was found that when the sum of the cube of the branch width was equal to the cube of the main stem width, the water transport efficiency of liquid water in the fabric is optimal. At the same time, a summary of the experimental data was made by comparing the water transport property of fabrics with corresponding equal areas but different widths or heights. It was found that for nonwoven fabrics with the same area size, tree-like structures can transport liquid water to a farther distance in the same amount of time. Furthermore, the liquid water transport ability of tree-like nonwoven fabrics in the horizontal direction was simulated using finite element analysis in COMSOL Multiphysics, and the results were in good agreement with the experimental values.

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Bionic optimization for cooling structure of GaN HEMTs inspired by leaf vein structure

Xu,

Zhang,

Gao

et al. 2024

Case Studies in Thermal Engineering

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Thermal-hydraulic performance of flat-plate microchannel with fractal tree-like structure and self-affine rough wall

Cited by 8 publications

References 48 publications

Research on Effective Thermal Conductivity in Porous Media Embedded with Randomly Distributed Damaged Tree-like Bifurcation Networks

Research on Effective Thermal Conductivity in Porous Media Embedded with Randomly Distributed Damaged Tree-like Bifurcation Networks

Study on the water transport performance of the fractal tree-like structure of nonwoven cotton fabrics

Bionic optimization for cooling structure of GaN HEMTs inspired by leaf vein structure

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