A heat transfer analysis from a porous plate with transpiration cooling

Kılıç, Mustafa

doi:10.2298/tsci180326135k

Cited by 6 publications

(4 citation statements)

References 22 publications

(29 reference statements)

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“…The applications of nanofluids are found in various fields like electronics [4,5], solar energy [6][7][8], nuclear reactors [9][10][11], pool boiling [12,13], automotive industry [14][15][16], medical [17][18][19], food industry [20,21], machining processes [22][23][24][25], and in heating and cooling of buildings [26,27]. In comparison to single nanoparticle fluids and traditional fluids, the nanofluids demonstrated improved thermal characteristics [28][29][30][31][32][33][34][35][36]. So, this field looks emerging for future studies.…”

Section: Introductionmentioning

confidence: 99%

Hybrid nanofluids development and benefits: A comprehensive review

SUNEETHA

SUBBARAYUDU²,

REDDY

2022

Journal of Thermal Engineering

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Hybrid nanofluids (HNFs) have received the prominent attention of researchers due to their improved thermophysical properties than conventional liquids and single-phase nanofluids. Such high potential heat transfer fluids are obtained from the suspension of two or more dissimilar nanoparticles in a regular heat transfer liquid. Owing to the high heat transfer properties of hybrid nanofluid, these are widely used in industrial processes, manufacturing processes, and biomedical engineering. This framework presents a detailed review of hybrid nanofluids preparation, stability, thermophysical properties, and importance in various engineering fields. Furthermore, present analysis addresses the pH control and ultrasound intensity of hybrid nanofluid. This analysis also manifests a hybrid nanofluid preparation method and suitable nanoparticles mixers for various industrial uses. This study reveals some future trends and possibilities related to HNF and a few suggestions regarding the scope in the future research in this area. A big impact with small particles for coming years. The hybrid nanofluid are having higher thermal conductivity which affects significantly to machining output response variables. By hybridizing the suitable combination of nanoparticles, the required heat transfer effect can be obtained still at low particle concentrations.

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Section: Introductionmentioning

confidence: 99%

Hybrid nanofluids development and benefits: A comprehensive review

SUNEETHA

SUBBARAYUDU²,

REDDY

2022

Journal of Thermal Engineering

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“…This model was numerically solved by using a finite element technique. Other researchers also investigated a similar setup with different shapes of annulus geometry to enhance the transfer rate [11][12][13][14][15][16][17][18].Aright circular cone with non-Newtonian fluid in saturated porous medium was used to investigate the viscosity, thermal dispersion influences on natural convection [19]. Mathematical models and experimental works have been carried out to show the influence on heat transfer rate of the porous medium existence in the annular cylindrical-shaped container.…”

Section: Introductionmentioning

confidence: 99%

Investigation of transient and steady heat transfer in saturated porous medium filled in a vertical cylinder with thermal dispersion and radiation

2022

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In this study, the influence of thermal radiation and dispersion on a porous medium which was filled in a vertical cylinder was numerically solved. A finite-difference method was used to solve the non-dimensional equations by applying a Crank-Nicolson implicit numerical technique. Moreover, an experimental setup has been initially built to investigate the effect of three different grain sizes of the porous materials on the heat transfer process. The numerical results indicated that the thermal radiation increased the momentum and the thickness of the thermal boundary layer during the natural convection heat transfer process. Whereas, the thermal dispersion factor decreased the momentum and the thickness of the boundary layer during the natural convection heat transfer process, which enabled a steady and transient heat transfer. The experimental results indicated that the pore size of the medium significantly affected the rate of the heat transfer process. A smaller pore size showed a greater effect and could be used in different applications that involve a higher heat transfer rate, while a larger pore size can potentially be used as an insulating material.

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“…Cosart, (1975) experimentally tested the influence of varied substrate thickness on the cooling efficiency, and found that the transpiration cooling effect is independent of the thickness of porous media. But the pressure drop of the coolant through the porous media increased significantly with the increase of the thickness (Kilic, 2019;Su et al, 2019;Su et al, 2021), affecting the endurance of the aircraft. Because of the mainstream's aerodynamic effect during high-speed flight, porous media needed to be thick enough to assure mechanical stability in the actual structural design.…”

Section: Introductionmentioning

confidence: 99%

Effects of particle diameter and plate thickness on transpiration cooling for double-layer porous plates

Zhang

Yan

et al. 2022

Front. Energy Res.

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Transpiration cooling is a highly efficient active thermal protection technology, which has a great application prospect in the thermal protection of hypersonic vehicles. Nevertheless, the problem of large injection pressure caused by porous structure in transpiration cooling system has been ignored in previous studies. In this work, the transpiration cooling performance of double-layer sintered metal particle plates with different particle diameter combinations and plate thickness were simulated. The results showed that the cooling effectiveness of double-layer plates was improved when the particle diameter of the porous plate in direct contact with the main stream decreased. The inner plate particle diameter and plate thickness had little effect on cooling performance. By increasing inner plate particle diameter, the coolant injection pressure can be lowered by 41% while the structural thickness was maintained. Further reducing the thickness of the outer plate to 1/4 of the total thickness can reduce the injection pressure to 38% of the single plate, which provided an optimization direction for reducing engine power consumption caused by heat dissipation.

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A heat transfer analysis from a porous plate with transpiration cooling

Cited by 6 publications

References 22 publications

Hybrid nanofluids development and benefits: A comprehensive review

Hybrid nanofluids development and benefits: A comprehensive review

Investigation of transient and steady heat transfer in saturated porous medium filled in a vertical cylinder with thermal dispersion and radiation

Effects of particle diameter and plate thickness on transpiration cooling for double-layer porous plates

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