Effects of nanoparticle size on surface dynamics and thermal performance in film boiling of Al<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si171.svg" display="inline" id="d1e1028"><mml:msub><mml:mrow/><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:math>O<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si172.svg" display="inline" id="d1e1036"><mml:msub><mml:mrow/><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:math> water-based nanofluids

Yahyaee, A.; Vatankhah, P.; Sørensen, H.

doi:10.1016/j.colsurfa.2024.134267

Cited by 4 publications

References 76 publications

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Thermal and hydraulic characteristics of a single reverse nanofluid jet in a double-wall cooling configuration

Ibrahim,

Hassan,

Ahmed

et al. 2024

J Therm Anal Calorim

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This work investigates the thermo-hydraulic characteristics of a novel reverse jet impingement cooling 3-D module for high-power systems, entailing a single jet impinging upon a concave hemispherical surface within a double-wall cooling configuration. Water-based nanofluids, with Al2O3 and multi-wall carbon nanotubes (MWCNT), were subject to a comprehensive examination at a range of Reynolds numbers from 10,000 to 40,000. The computational framework utilized the volume of fluid (VOF) model for precise phase interface tracking, along with the $$k-\omega$$ k - ω SST turbulence model. The results demonstrated that nanofluids have remarkable heat transfer enhancement, compared to water. The maximum Nusselt number augmentation reached 61.76% and 77.47% for 2.0% Al2O3 and 0.04% MWCNT nanofluids, respectively. The thermal performance improved when escalating nanoparticle concentration and Reynolds numbers, reaching a cooling module’s thermal resistance of only 0.0266 K W−1. However, mild increments in pressure drop of up to 7.80 and 3.04% were noticed at the lowest Reynolds number for the two nanofluids, respectively. MWCNT nanofluids exhibited superior thermal enhancement over their Al2O3 counterparts despite their lower concentrations. The greatest combined thermo-hydraulic performance was attained with a 0.04% MWCNT nanofluid at a Reynolds number of 20,000, where the energy performance was boosted by 77%, compared to water. The study identified significant conjugate heat transfer effects, demonstrating how temperature gradients within the solid walls directly influenced heat transfer coefficients and thermal resistances within the fluid phase. These findings provide a deeper understanding of thermal management strategies for high-power systems. Graphic abstract

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Thermal and hydraulic characteristics of a single reverse nanofluid jet in a double-wall cooling configuration

Ibrahim,

Hassan,

Ahmed

et al. 2024

J Therm Anal Calorim

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Ag, Cu, and Se-doped ultrasmall iron oxide colloidal gels: Revealing potential for photo/electrochemical applications

Ivashchenko,

Jędrzak,

Lys

et al. 2024

Applied Surface Science

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Comparative analysis of heat transfer performance in film boiling on a superheated vertical cylinder: A detailed CFD study of water-based Al2O3
Yahyaee
2024
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Effects of nanoparticle size on surface dynamics and thermal performance in film boiling of Al2O3 water-based nanofluids

Cited by 4 publications

References 76 publications

Thermal and hydraulic characteristics of a single reverse nanofluid jet in a double-wall cooling configuration

Thermal and hydraulic characteristics of a single reverse nanofluid jet in a double-wall cooling configuration

Ag, Cu, and Se-doped ultrasmall iron oxide colloidal gels: Revealing potential for photo/electrochemical applications

Comparative analysis of heat transfer performance in film boiling on a superheated vertical cylinder: A detailed CFD study of water-based Al2O3
Yahyaee
2024
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Effects of nanoparticle size on surface dynamics and thermal performance in film boiling of Al2O3 water-based nanofluids

Cited by 4 publications

References 76 publications

Thermal and hydraulic characteristics of a single reverse nanofluid jet in a double-wall cooling configuration

Thermal and hydraulic characteristics of a single reverse nanofluid jet in a double-wall cooling configuration

Ag, Cu, and Se-doped ultrasmall iron oxide colloidal gels: Revealing potential for photo/electrochemical applications

Comparative analysis of heat transfer performance in film boiling on a superheated vertical cylinder: A detailed CFD study of water-based Al2O3Yahyaee 2024Powder Technology0000View full textAdd to dashboardCite

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Comparative analysis of heat transfer performance in film boiling on a superheated vertical cylinder: A detailed CFD study of water-based Al2O3
Yahyaee
2024
Powder Technology
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