Effects of diffuse and collimated beam radiation on a symmetrical cooling case of natural convection

Chanakya, G.; Kumar, P. K. Vinod

doi:10.1016/j.tsep.2021.101006

Cited by 6 publications

(2 citation statements)

References 32 publications

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“…Abu-Mulaweh 26 did a detailed study on the available literature on BFS and forward facing step (FFS) and summarized the effect of some parameters such as Re, Pr, on flow characteristics. Pradeep and Chanakya [27][28][29][30] did a detailed study of combined RHT and natural convection and they also studied the behavior of radiation beam diffused or collimated.…”

Section: Introductionmentioning

confidence: 99%

Modeling of thermal radiation in a participating media with conjugate heat transfer

Kumar,

Jayakumar,

Babu

2024

Heat Trans

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Modeling a combination of thermal radiation and conjugate heat transfer in a three‐dimensional rectangular domain which has a participating media CO2 flowing through is done numerically in OpenFOAM. The rectangular duct has a vertical step (facing forward to the inlet) which is located at a distance from the inlet (the distance is same as the height of the inlet section). The domain is divided into two regions (namely solid and fluid). Carbon dioxide, a highly absorbing fluid with extinction, is used here as the participating medium. The ability of the code is verified to analyze the thermal radiation in a participating media with conjugate heat transfer. The study was carried out for a constant Reynolds number 250 and a contraction ratio of 0.5. The study focused primarily on the importance of adding thermal radiation on to thermal analysis and the reason behind the Nusselt number variation on different regions of solid–fluid interface. It also discussed the effect of radiative properties, such as optical thickness and linear scattering albedo, on the average convective Nusselt Number.

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Section: Introductionmentioning

confidence: 99%

Modeling of thermal radiation in a participating media with conjugate heat transfer

Kumar,

Jayakumar,

Babu

2024

Heat Trans

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“…14 Studies that numerically analyze the effect of natural convection on symmetric cooling in a space show that radiation and sunlight also have an impact on velocity and temperature distributions. 15,16 The use of nanofluid, a new cooling approach, and the effect of thermal radiation on heat transfer are seen. 17 Radiative cooling is important among sustainable cooling technologies.…”

Section: Introductionmentioning

confidence: 99%

Radiative cooling: Experimental and numerical analysis for enhanced thermal management strategies in engineering systems

Güler

2024

Heat Trans

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This study aims to fully evaluate the radiation effect in existing cooling systems. The research, a combination of experimental analysis and numerical simulations using ANSYS Fluent, examines the complexity of radiative cooling processes and their impact on thermal management in various engineering applications. The experiments began by carefully placing a 112.5 W heater into the thermal channel. Next, temperature measurements were made under various conditions. In particular, the use of black cotton fabric as the inner duct lining applied in the thermal channel stands out as an innovation that aims to optimize heat absorption by increasing radiative properties. The findings highlight the significant impact of radiation on cooling performance. A temperature drop of 2–3°C was observed in cooling under the effect of radiation. Additionally, numerical simulations reveal the feasibility of radiative cooling systems by providing valuable information about the flow dynamics and heat transfer mechanisms within the channel. The novelty of this work is its detailed examination of radiative cooling effects and its focus on its potential to optimize thermal management strategies in various engineering applications. Explaining the role of radiation in heat transfer and providing practical information to improve cooling efficiency demonstrates that this research brings important insight and lays the foundation for future advances in the field. Considering the urgent need for energy‐efficient cooling solutions and the increasing demand for sustainable engineering practices, the findings of this study will provide important insights for researchers and practitioners. This study provides innovative perspectives and solutions to address the increasing challenges of heat transfer and energy conservation in engineering systems. It makes a significant contribution to the field of thermal management by offering methodologies.

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Effects of diffuse and collimated beam radiation on plume formation in natural convection within a cubical enclosure

Chanakya

Kumar

2022

International Journal of Heat and Mass Transfer

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Effects of diffuse and collimated beam radiation on a symmetrical cooling case of natural convection

Cited by 6 publications

References 32 publications

Modeling of thermal radiation in a participating media with conjugate heat transfer

Modeling of thermal radiation in a participating media with conjugate heat transfer

Radiative cooling: Experimental and numerical analysis for enhanced thermal management strategies in engineering systems

Effects of diffuse and collimated beam radiation on plume formation in natural convection within a cubical enclosure

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