Performance optimiation of a cylindrical mini-channel heat sink using hybrid straight–wavy channel

Abdulqadur, Ammar Abdulhaleem; Jaffal, Hayder Mohammad; Khudhur, Dhamyaa S.

doi:10.1016/j.ijthermalsci.2019.106111

Cited by 27 publications

(4 citation statements)

References 49 publications

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“…Kumar and Singh (2019) The channel with variable distributor and collector positions. Abdulhaleem et al (2019) The channel with straight and wavy cross sections. Lim and Lee (2019) The channel with parallel and opposing flow directions.…”

Section: Referencementioning

confidence: 99%

Tam Ve Parçali Si̇li̇ndi̇ri̇k Kanatçik Konfi̇gürasyonlarinin Bi̇r Mi̇ni̇kanalli Isi Alicinin Termohi̇droli̇k Performansi Üzeri̇ndeki̇ Etki̇leri̇

SARPER,

TÜRK,

DAĞIDIR

et al. 2023

KSU J. Eng. Sci.

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In this numerical investigation, the impacts of complete and partial cylindrical fin configurations on the thermohydraulic performance of a minichannel heatsink are studied. ANSYS Fluent software is used to conduct numerical analyses for four distinct mass flow rates ranging from 0.00265 kg/s to 0.0045 kg/s and three distinct fin positions. The effects of various configurations on velocity and temperature fields, average Nusselt number, Nusselt number ratio, friction coefficient, and performance evaluation coefficient are analyzed. According to the study’s findings, using partial cylindrical fins has a substantial impact on both heat transfer and pressure drop. When evaluating heat transfer, MCHS-R2a produces the greatest results, but this configuration greatly raises flow resistance. MCHS-R2c was found to have substantial potential when evaluated in terms of thermohydraulic performance.

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Section: Referencementioning

confidence: 99%

Tam Ve Parçali Si̇li̇ndi̇ri̇k Kanatçik Konfi̇gürasyonlarinin Bi̇r Mi̇ni̇kanalli Isi Alicinin Termohi̇droli̇k Performansi Üzeri̇ndeki̇ Etki̇leri̇

SARPER,

TÜRK,

DAĞIDIR

et al. 2023

KSU J. Eng. Sci.

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“…In the current work, a three-dimensional heat transfer and CuO-water nanofluid as a coolant fluid was modeling, the simplifying assumptions (Abdulqadur et al 2019;Feng et al 2017) are as follows:…”

Section: Governing Equations and Boundary Conditionsmentioning

confidence: 99%

“…And D h is the hydraulic diameter is the region, which is equal to. The average heat transfer coefficient calculated by using Newton's cooling law as follows: (Abdulqadur et al 2019). ( 14) The ̇q : heat input to the cylindrical heat sink equal to q″ × A s where A s : is the surface area of the sinusoidal cylindrical heat sink core hole.…”

Section: Data Reductionmentioning

confidence: 99%

A numerical comparison of circular and corrugation heat sink for laminar CuO–water nano-fluid flow and heat transfer enhancement

2021

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Since the high heat has a bad effect on every electric coolant device performance in small spaces, enhance thermal systems became a challenge to achieve better performance. In the present study, investigate the forced heat transfer and laminar CuOwater nanofluid flow around the sinusoidal cylindrical and cylindrical heat sink, at Reynold number less than 700, and at a constant heat flux. Which is simulated numerically by Galerkin approach finite element methods FEM. The main purpose of the study is to drop the heat spam by enhancing the heat transfer coefficient of laminar flow in different channel types of special shape (corrugate cross-section) using nanofluid. Study the effect of hydraulic diameter of sinusoidal cylindrical to classify the channels depended on (D h ≤ 3 mm). The new design of heat sink is employed "sinusoidal cylindrical heat sink" varied according to the amplitude values (λ) and the corrugation number (G). A digest of the findings, the best enhance at φ = 0.15%vol of 16.31% and 16.53% for G = 3 and G = 10, respectively. A great drop in wall temperature about 20.47 and 16.58 for λ = 20 of G = 3, and G = 10, respectively, as the volume fraction of CuO-water nanofluid increased at Re = 478 & q″ = 127.3 kW/m 2 , comparing with water. In conclusion, the sinusoidal heat sink of λ = 20 with CuO-H 2 O nanofluid of φ = 0.15%vol showed best enhance in heat transfer coefficient. Increased the corrugate number G led to a decrease in the friction factor and thermal resistance. Furthermore, using nanofluid led to reduce the surface wall temperature, the friction factor also the thermal resistance. KeywordsMini-channel heat sinks • Nanofluid • Forced heat transfer • Corrugation circular cylinder • Laminar flow • Finite element methods Abbreviations 3D Three-dimensional. 2D Two-dimensional * Farooq H. Ali

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“…A new channel design was suggested by Abdulqadur et al 24 to improve the efficiency of a cylinder-shaped minichannel heat sink with a slight potential pressure drop. The concept was straight-wavy hybrid channel in which the direction of the channel vagaries from the entry straight to the wavy path.…”

Section: Introductionmentioning

confidence: 99%

Improving the performance of mini-channel heat sink by using wavy channel and different types of nanofluids

Saadoon

Ali

Hamzah

et al. 2022

Sci Rep

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The combination of nano fluid and changing cross-section mini-channel heat sink effects have become a remarkable choice for the use of thermal devices such as miniature electronic devices to be effectively cooled. In this paper, the comparison of three dimensional straight and wavy channel configuration with using different types nano fluids are numerically investigated. The effects of wave amplitude and A particular type of volume fraction of (Copper Oxide CuO, Dimond Al2O3, Iron Oxide Fe3O4, Titanium Oxide TiO2 and Silver Ag-nano fluids are offered. Three amplitudes of waves (0.15 mm, 0.2 mm and 0.25 mm) and Reynold’s number from 200 to 1000 and concentration volume varieties from 0 to 0.075 are used. The effect on thermal resistance, pressures drop, factor of friction of the mini channel is displayed. It is observed that the mini-channel sink's heat transfer efficiency is greatly enhanced compared to the straight channel in an event of adding distilled water as accoolant. The results indicate that nano fluid and wavy mini-channel can boost the heat sink's hydrothermal efficiency and Ag- water nano fluid in term of heat transfer, it outperforms other nanofluids an enhancement in the Nusselt number reached to 54% at concentration volume 0.075.

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Performance optimiation of a cylindrical mini-channel heat sink using hybrid straight–wavy channel

Cited by 27 publications

References 49 publications

Tam Ve Parçali Si̇li̇ndi̇ri̇k Kanatçik Konfi̇gürasyonlarinin Bi̇r Mi̇ni̇kanalli Isi Alicinin Termohi̇droli̇k Performansi Üzeri̇ndeki̇ Etki̇leri̇

Tam Ve Parçali Si̇li̇ndi̇ri̇k Kanatçik Konfi̇gürasyonlarinin Bi̇r Mi̇ni̇kanalli Isi Alicinin Termohi̇droli̇k Performansi Üzeri̇ndeki̇ Etki̇leri̇

A numerical comparison of circular and corrugation heat sink for laminar CuO–water nano-fluid flow and heat transfer enhancement

Improving the performance of mini-channel heat sink by using wavy channel and different types of nanofluids

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