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International Journal of Fluid Mechanics Research

Publication de 6  numéros par an

ISSN Imprimer: 2152-5102

ISSN En ligne: 2152-5110

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LAMINAR THERMO-HYDRAULIC CHARACTERISTICS IN FRACTAL TREE-LIKE MICROCHANNEL NETWORKS

Volume 46, Numéro 6, 2019, pp. 509-523
DOI: 10.1615/InterJFluidMechRes.2019026914
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RÉSUMÉ

This study focuses on the hydraulic and thermal characteristics of fractal tree-like microchannels with variable hydraulic diameters, bifurcation levels, and hydraulic diameter ratios for the Reynolds numbers ranging from 124.4 to 622. To evaluate the microchannel performances, the coefficient of performance is based on pumping power and heat transfer rate. The thermal and hydraulic performances of eight different cases are discussed in terms of the mean heat transfer coefficient, pressure loss, thermal resistance, and coefficient of performance. Results indicate that variable hydraulic diameters, higher bifurcation levels, and hydraulic diameter ratios lead to an enhanced heat transfer at the expense of pressure loss. Furthermore, the hydraulic diameter ratio has the greatest influence on the mean heat transfer coefficient, pressure drop, and coefficient of performance. The microchannel with variable hydraulic diameter, three bifurcation levels, and the hydraulic diameter ratio of 1.618 can achieve a higher heat transfer performance, while a lower coefficient of performance is obtained.

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CITÉ PAR
  1. Song Jian, Liu Fei, Sui Yi, Jing Dalei, Numerical studies on the hydraulic and thermal performances of trapezoidal microchannel heat sink, International Journal of Thermal Sciences, 161, 2021. Crossref

  2. A Rajalingam, Chakraborty Shubhankar, Effect of shape and arrangement of micro-structures in a microchannel heat sink on the thermo-hydraulic performance, Applied Thermal Engineering, 190, 2021. Crossref

  3. Lau G.E., Mohammadpour J., Lee A., Cooling performance of an impinging synthetic jet in a microchannel with nanofluids: An Eulerian approach, Applied Thermal Engineering, 188, 2021. Crossref

  4. Mieczkowski Mateusz, Furmański Piotr, Łapka Piotr, Optimization of a microchannel heat sink using entropy minimization and genetic aggregation algorithm, Applied Thermal Engineering, 191, 2021. Crossref

  5. LIU FEI, JING DALEI, OPTIMIZATION OF HEAT CONDUCTION FOR TREELIKE NETWORK WITH ARBITRARY CROSS-SECTIONAL SHAPE, Fractals, 30, 01, 2022. Crossref

  6. LIU FEI, ZHU RONGSHENG, JING DALEI, HYDRAULIC AND THERMAL PERFORMANCES OF TREE-LIKE CONVERGENT MICROCHANNEL HEAT SINKS, Fractals, 30, 04, 2022. Crossref

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