Performance evaluation of RANS-based turbulence models in simulating a honeycomb heat sink

Subasi, Abdussamet; Ozsipahi, Mustafa; Şahin, Bayram; Güneş, Hasan

doi:10.1007/s00231-017-1969-8

Cited by 7 publications

(2 citation statements)

References 23 publications

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“…Moreover, these devices have been getting smaller day by day. These facts necessitate removing excess heat from the system effectively within a limited space due to maintaining reliable operating conditions [4][5][6][7]. Mini-channels have become one of the most promising solutions for meeting these needs due to their low material, working fluid, and space needs, as well as their high surface area/volume ratio [8].…”

Section: Introductionmentioning

confidence: 99%

Mini-channel heat exchanger optimization using genetic algorithm and multiple-criteria decision making

Subasi

2022

Journal of Thermal Engineering

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This study aims to apply an integrated optimization approach that combines Multi-objective Optimization (MOO) and Multiple-criteria Decision-making (MCDM) to optimize a multiport mini-channel having 2D sawtooth micro fins under laminar, transitional, and turbulent flow conditions. Water was considered as working fluid. The Reynolds number (Re), fin height (H f ), fin width (W f ), the number of micro-fins in each mini-channel (N), and the distance between the successive fins (S1) were selected as design and flow parameters and the Nusselt number (Nu) and the Poiseuille number (Po) were selected as objective functions. A Genetic Algorithm based MOO study was conducted using the correlations available in the literature aiming to find the optimum values of design and flow parameters that maximize Nu and minimize Po. Then, the VIsekriterijumska Optimizacija I Kompromisno Resenje (VIKOR) method was employed to help designers to select an optimum design among the Pareto optimal solution set which is the output of MOO. Finally, the optimization results obtained were compared with those obtained by the 1st Law of Thermodynamics based Performance Evaluation Criteria (PEC). The advantages and disadvantages of these methods were discussed in detail. It is revealed that the integrated approach is a more comprehensive and flexible approach that also covers the results of PEC.

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Section: Introductionmentioning

confidence: 99%

Mini-channel heat exchanger optimization using genetic algorithm and multiple-criteria decision making

Subasi

2022

Journal of Thermal Engineering

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“…The shape of pin fins was also a successful strategy for heat sinks design. Several authors reported that the pin fins form plays an important role to improves thermal dissipation in heat sinks [32][33][34]. Leong et al [35] used paraffin wax and 1-hexadecanol based heat sinks to reduce the operating temperature of electronic device.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Heat Transfer Behaviors in Conical Pin Fins Heat Sinks

Souida¹,

Sahel²,

*³

et al. 2022

AMS

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The present study is a numerical investigation of the effect of the shape of pin fins on the overall performances of heat sinks. Conical shaped pin fins with varying conical size ratio (Hcp/d) are considered. Five geometrical cases are explored, namely Hcp/d = 0.167, 0.333, 0.500, 0.667 and 0.833. The distribution and values of temperature, Nusselt number, thermal resistance, pressure drop, as well as the hydrothermal performance factor are determined for various Reynolds numbers (up to 8,000). In addition, the performances of conical shaped fins are compared to those of the cylindrical fins. The obtained results revealed a decrease in the thermal resistance with increasing Re and Hcp/d ratio. At Re = 8000 and when changing (Hcp/d) from 0.167 to 0.833, the thermal resistance is decreased from 192.30% to 83.52% compared to the cylindrical pin fins. However, the increased (Hcp/d) ratio yields an increase in the pressure drop. At Re = 8000, the values of pressure drop for the conical fins are lower than those of the cylindrical fins by 343.32%, 275.92%, 205.79%, 144.86% and 100.38% for Hcp/d = 0.167, 0.333, 0.500, 0.667 and 0.833, respectively. The values of the hydrothermal performance factor (h) for the conical fins are greater than those of the cylindrical fins. Also, an increase in (h) values is observed with decreasing Hcp/d ratio. The highest (h) value of 1.51 is reached with the case Hcp/d = 0.167 at Re = 8,000.

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Forced convective heat transfer optimization of plate-fin heat sink with insert-induced turbulence

Hoi

Teh

Ooi

et al. 2019

Applied Thermal Engineering

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Performance evaluation of RANS-based turbulence models in simulating a honeycomb heat sink

Cited by 7 publications

References 23 publications

Mini-channel heat exchanger optimization using genetic algorithm and multiple-criteria decision making

Mini-channel heat exchanger optimization using genetic algorithm and multiple-criteria decision making

Numerical Simulation of Heat Transfer Behaviors in Conical Pin Fins Heat Sinks

Forced convective heat transfer optimization of plate-fin heat sink with insert-induced turbulence

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