Numerical simulation of turbulent nanofluid flow in the narrow channel with a heated wall and a spherical dimple placed on it by using of single- phase and mixture- phase models

Rajabi, Amir Hossein; Toghraie, Davood; Mehmandoust, Babak

doi:10.1016/j.icheatmasstransfer.2019.104316

Cited by 28 publications

(7 citation statements)

References 28 publications

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“…For hydrothermal features of cooling methods, many investigations have assessed different micro HSs for laminar and turbulent flow employing air, water, and nanofluids as Newtonian and non‐Newtonian are commonly used. These cooling approaches have been developed by the following techniques—straight flat plate fins, wavy plate fins, vortex generator, grooved tubes, inclined solid ribs, porous media, two‐phase flow, and magnetic field . All these attempts are enhanced by the thermohydraulic performance of different HS designs for more reduction in the weight and volume of electronic, electrical, and solar systems.…”

Section: Introductionmentioning

confidence: 99%

Three‐dimensional computational comparison of mini‐pinned heat sinks using different nanofluids: Part two—energy and exergy characteristics

Al‐damook

Alfellag

Khalil

2019

Heat Trans. Asian Res.

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The energy and exergy characteristics of 3D-pinned heat sink (HS) designs have been computationally compared as the second part of a three-part investigation. Different pin profiles, such as circular, square, triangular, strip and elliptic pins, and without pin HS are conducted with three different types of nanofluids-Al 2 O 3 -water, SiO 2 -water, and CuO-water for laminar forced convection. The concentrations of nanofluids vary from 0 to 5 vol% with different Reynolds numbers ranging between 100 and 1000. The finite volume method employing the SIMPLE algorithm for a computational solution is applied to solve the Navier-Stokes and energy equations. Four criterions studies are explained-energy efficiency, exergy loss, and exergy efficiency of HSs with pressure drop. The results showed that the highest energy and exergy efficiencies are nearly 76% and 57%, respectively, for elliptic-pinned HSs using pure water, while about 82% and 62% using 5 vol% of SiO 2 -water nanofluids. Besides, the elliptic-pinned HSs have a favorable reduction in the exergy loss, nearly 17% using 5 vol% of SiO 2 -water nanofluids. Subsequently, the elliptic-pinned HS is recommended to apply with pure water considering the development in pressure drop required. However, the elliptic-pinned HSs could be employed with 5 vol% of SiO 2 -water nanofluids regardless of the development in pressure drop required for thermal energy dissipation applications with more exergy efficiency and reduction of exergy loss. K E Y W O R D Sdifferent nanofluids, different pinned heat sinks, energy and exergy characteristics, exergy loss, thermal energy enhancement

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Section: Introductionmentioning

confidence: 99%

Three‐dimensional computational comparison of mini‐pinned heat sinks using different nanofluids: Part two—energy and exergy characteristics

Al‐damook

Alfellag

Khalil

2019

Heat Trans. Asian Res.

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“…(2)-(5) reduce to: and Excluding the pressure term P(ξ) by solving Eqs. (9) and (10), resulting in the following equation:…”

Section: Solution Proceduresmentioning

confidence: 99%

“…This system of Eqs. (10) and (12) are reduced to first-order equations incorporated with boundary conditions.…”

Section: Numerical Solutionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…The significant upshot of the present investigation is that velocity and the temperature profiles show an opposing trend for the suction/ injection parameter. More studies highlighting numerous aspects of nanofluids may be found at [10][11][12][13][14][15][16][17][18][19][20][21] . The appropriate dispersion of nanoparticles causes remarkable enhancement in the thermal conductivity of the customary fluid.…”

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confidence: 99%

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Numerical treatment of radiative Nickel–Zinc ferrite-Ethylene glycol nanofluid flow past a curved surface with thermal stratification and slip conditions

Ramzan

Gul

Chung

et al. 2020

Sci Rep

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The inadequate cooling capacity of the customary fluids forced the scientists to look for some alternatives that could fulfill the industry requirements. The inception of nanofluids has revolutionized the modern industry-oriented finished products. Nanofluids are the amalgamation of metallic nanoparticles and the usual fluids that possess a high heat transfer rate. Thus, meeting the cooling requirements of the engineering and industrial processes. Having such amazing traits of nanofluids in mind our aim here is to discuss the flow of nanofluid comprising Nickel–Zinc Ferrite and Ethylene glycol over a curved surface with heat transfer analysis. The heat equation contains nonlinear thermal radiation and heat generation/absorption effects. The envisioned mathematical model is supported by the slip and the thermal stratification boundary conditions. Apposite transformations are betrothed to obtain the system of ordinary differential equations from the governing system in curvilinear coordinates. A numerical solution is found by applying MATLAB build-in function bvp4c. The authentication of the proposed model is substantiated by comparing the results with published articles in limiting case. An excellent concurrence is seen in this case. The impacts of numerous physical parameters on Skin friction and Nusselt number and, on velocity and temperature are shown graphically. It is observed that heat generation/absorption has a significant impact on the heat transfer rate. It is also comprehended that velocity and temperature distributions have varied behaviors near and far away from the curve when the curvature is enhanced.

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Numerical study on hot spot minimization and heat transfer enhancement of narrow rectangular channel with slit elliptic dimples

Wang,

Sun,

et al. 2023

Heat Mass Transfer

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Numerical simulation of turbulent nanofluid flow in the narrow channel with a heated wall and a spherical dimple placed on it by using of single- phase and mixture- phase models

Cited by 28 publications

References 28 publications

Three‐dimensional computational comparison of mini‐pinned heat sinks using different nanofluids: Part two—energy and exergy characteristics

Three‐dimensional computational comparison of mini‐pinned heat sinks using different nanofluids: Part two—energy and exergy characteristics

Numerical treatment of radiative Nickel–Zinc ferrite-Ethylene glycol nanofluid flow past a curved surface with thermal stratification and slip conditions

Numerical study on hot spot minimization and heat transfer enhancement of narrow rectangular channel with slit elliptic dimples

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