Natural Convection Heat Transfer Augmentation Factor with Square Conductive Pin Fin Arrays

Sahoo, Laxman Kumar; Roul, Manmatha K.; Swain, R. K.

doi:10.1134/s0021894417060189

Cited by 7 publications

(3 citation statements)

References 9 publications

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“…Sahoo et al [17][18][19] employed computational fluid dynamics techniques to analyze heat transfer from pin-finned horizontal and vertical plates. Baqir et al [20] carried out the performance evaluation of improved metal stove over traditional mud chulha.…”

Section: Introductionmentioning

confidence: 99%

Archives of Thermodynamics

Nayak,

Roul,

Roul

2022

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Section: Introductionmentioning

confidence: 99%

Archives of Thermodynamics

Nayak,

Roul,

Roul

2022

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“…They found that with an increasing number of fins the Nusselt number reduces for laminar heat treatment. Sahoo et al 9 study used the Navier‐Stokes equation as well as the energy equations. They explained that the mean Nusselt number rises with an increase in aspect ratio.…”

Section: Introductionmentioning

confidence: 99%

CFD analysis on heat transfer through different extended surfaces

Sahoo

Roul

2020

Heat Trans

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The present study includes computational fluid dynamics analysis and comparison of heat enhancement through different extended surfaces, especially in rectangular and square conductive and nonconductive fins. Computational and numerical analysis of heat transfer from a rectangular extended surface and a pin-finned plate studied to calculate the average Nusselt number in parallel, vertical direction placed along the sidewall. The total rise of the mean Nusselt number is noticed around 36% in pin-finned plate with respect to a plain plate. This is examined with optimal fin spacing of S v with L ratio equals to 0.2 and S h with W ratio equals to 0.25, height of extended surfaces 24 mm with 45°angle of inclination. The mean Nusselt number reduces with a rise in the angle of inclination and also increases with a rise in aspect ratio. The present study reveals that inline and staggered arrangements do not yield appreciably different results. The maximum average Nusselt number difference between conductive and nonconductive fins is around 5% for S h per W ratio 0.33 and S v per L ratio 0.2 at an angle of inclination 45°, fin height of 6 mm (height to thickness ratio 2).

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“…Nayak et al [16,17] investigated natural convection heat transfer from heated vertical pipes experimentally and developed correlations for Nusselt number and Rayleigh number. Sahoo et al [18,19] studied numerically the heat transfer from an isothermal plate with protrusions and developed correlations to predict the average Nusselt number as a function of fin spacing in the streamwise and spanwise directions, aspect ratio and inclination of the fins. Chaware and Sewatkar [20] analysed numerically the fluid flow and heat transfer in a pipe with full length twisted tape insert and developed correlations for friction factor and Nusselt number.…”

Section: Introductionmentioning

confidence: 99%

Methane–air-premixed flames impinging on plane surfaces

Tripathy

Roul²,

Rout

2019

Sādhanā

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Determination of heat transfer characteristic has been analysed theoretically using the heat propagation phenomena of methane-air-premixed turbulent flames impinging on plane surfaces. The heat flux propagation on the plane surface completely depends on the distance between the plate and nozzle, Reynolds number and equivalence ratio (ER). The solution of the differential equation related to conservation of momentum, mass and energy has been analysed. The radiative heat transfer model has been designed using several radiation models and the turbulence model is analysed by the help of RNG k-e turbulence model. In the response plot it is found that heat flux increases progressively with the radial distance towards the centre of the plate to achieve the maximum value at a position a bit away from stagnation point and thereafter it reduces. It has also been exhibited that when the distance of the target plate increases, the location of the maximum value of the local heat flux approaches the stagnation point. The dependence of heat transfer phenomena on ER, Reynolds number and separation of the plate from the nozzle has been studied.

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Natural Convection Heat Transfer Augmentation Factor with Square Conductive Pin Fin Arrays

Cited by 7 publications

References 9 publications

Archives of Thermodynamics

Archives of Thermodynamics

CFD analysis on heat transfer through different extended surfaces

Methane–air-premixed flames impinging on plane surfaces

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