Constructal design of a T-shaped porous fin adopting minimum composite function, ANN and NSGA-II

International Communications in Heat and Mass Transfer, Journal Year: 2025, Volume and Issue: 162, P. 108581 - 108581

Published: Jan. 6, 2025

Language: Английский

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Performance evaluation of MEMS heat sinks having straight microchannels integrating rectangular sidewall cavities in in-line pattern

Applied Thermal Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 125696 - 125696

Published: Jan. 1, 2025

Language: Английский

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Multi-objective optimization of double-layer microchannel heat sink with trapezoidal cross-sections based on computational fluid dynamics

International Journal of Thermal Sciences, Journal Year: 2025, Volume and Issue: 214, P. 109879 - 109879

Published: March 18, 2025

Language: Английский

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Heat Transfer Performance and Flow Characteristics of a Heat Exchange Tube with Isosceles Trapezoidal Winglet Longitudinal Vortex Generators

Energies, Journal Year: 2025, Volume and Issue: 18(7), P. 1717 - 1717

Published: March 29, 2025

The thermal-hydraulic performance of circular heat transfer tubes equipped with isosceles trapezoidal winglet longitudinal vortex generators (ITWL-VGs) was investigated through integrated experimental and numerical approaches. Experimental studies were conducted that focused on the effects key parameters: (1) ITW quantity (n = 4, 6, 8); (2) attack angle (α 0°, 15°, 30°, 45°); (3) four distinct VG arrangements. Numerical simulations employing multi-physical field analysis elucidated underlying enhancement mechanisms. demonstrated excellent agreement measurements. results indicated uniformly distributed ITWL-VGs suitable angles (α) significantly enhanced thermal performance. Increasing number ITWs (N) generated additional vortices, intensifying fluid mixing enhancement, thereby improving PEC value. All Nusselt (Nu), friction factor (f) values exhibited positive correlations α spacing (LP), respectively. Within scope this study, should not be less than 30°. In addition, an optimal value used for LP. maximum 1.27. These findings conclusively significant capabilities ITWL-VGs.

Language: Английский

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Forced Convection Heat Dissipation from Pin Fin Heat Sinks Modified by Rings and Circular Perforation

Acta Mechanica et Automatica, Journal Year: 2025, Volume and Issue: 19(1), P. 117 - 125

Published: March 1, 2025

Abstract The primary factors to be managed in the design of heat sinks include enhancing dissipation rate, minimizing occupied volume and mass, eliminating lower transfer areas behind pin fins. This study focuses on numerically analysing impact combining perforation technique ring inserts turbulent fluid flow characteristics fin sinks. rings are positioned around cylindrical fins (CPFs). allows pass through (PFs) agitate stagnant zones PFs. These configurations denoted as case 0 (no perforation) 4. Results show that fitted with (case 4), an optimal configuration, demonstrates a 180.82% increase Nusselt number 154.54% decrease thermal resistance compared CPFs. Fortunately, this configuration contributes significant pressure drop by 62.19%. Furthermore, under same conditions, mass 4 reduced 77.5% 77.65%, respectively. Additionally, exhibits highest hydrothermal performance factor (η) 3.29 at Re = 8740.

Language: Английский

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Optimizing Thermal Performance of Mini Heat Exchangers: An Experimental Analysis Using a Full Factorial Design

Applied Sciences, Journal Year: 2025, Volume and Issue: 15(7), P. 4052 - 4052

Published: April 7, 2025

This study seeks to investigate the heat dissipation process in a minichannel exchanger, commonly employed for cooling electronic components. The analysis centers on two key factors: global thermal resistance (GTR) and transfer coefficient. innovation of this resides development mini exchanger optimized using chemometric methods achieve efficient dissipation. Various conditions, including power source, volumetric flow rate, ambient temperature, were varied at both low high levels assess their impact these variables establish optimal conditions components, such as processors, remains topic ongoing research, miniaturization components through nanotechnology requires enhanced within increasingly smaller spaces. experimental identifies GTR coefficient examined parameters. is minimized with 30 W, an temperature 29 °C, rate 2.50 L·min−1. results indicate that electrical was most significant variable affecting GTR, while also played determining role

Language: Английский

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Heat transfer enhancement for high power chips in immersion cooling by ducted propellers

Applied Thermal Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 126469 - 126469

Published: April 1, 2025

Language: Английский

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Immersed jet impingement heat transfer for servers in immersion cooling data Center: A Parametric study

Applied Thermal Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 126628 - 126628

Published: April 1, 2025

Language: Английский

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Numerical modeling of microchannel heat sink performance covered by a corrugated porous layer containing phase change slurry assuming local thermal non-equilibrium

International Communications in Heat and Mass Transfer, Journal Year: 2024, Volume and Issue: 158, P. 107854 - 107854

Published: July 26, 2024

Language: Английский

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A comprehensive review of cold plate liquid cooling technology for data centers

Chemical Engineering Science, Journal Year: 2025, Volume and Issue: unknown, P. 121525 - 121525

Published: March 1, 2025

Language: Английский

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