Empirical correlations for mixed convection heat transfer through a fin array based on various orientations

Homod, Raad Z.; Abood, Falah A.; Shrama, Sana M.; Alshara, Ahmed K.

doi:10.1016/j.ijthermalsci.2018.12.012

Cited by 30 publications

(2 citation statements)

References 30 publications

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“…Armaghani et al (2019) using the finite volume method and SIMPLE algorithm in-home computer code by FORTRAN 90 investigated the impacts of discrete heat sources location on heat transfer and entropy generation in an open Inclined rectangular fin array inclined L shape cavity. Another investigation by Homoda et al (2019) experimentally showed the distribution of heat transfer coefficients fluctuations at higher inclination angles because of the unstable secondary flow. For a two-dimensional cavity, Yapici and Obut (2015) numerically investigated steady laminar natural and mixed convection heat transfer.…”

Section: Introductionmentioning

confidence: 96%

Laminar entry region mixed convection heat transfer from an inclined rectangular fin array

Roy

Giri

Das

2020

HFF

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Purpose The paper aims to investigate the influence of the angle of inclination on mixed convection heat transfer from rectangular plated shrouded fin array computationally. This study has got applications in the various thermal field such as cooling, solar thermal and so on. Design/methodology/approach A computational study is made to evaluate the thermal performance in an inclined channel. Findings Increase in clearance from 0.01 to 0.25 results in an increase of local Nusselt number by is as high as 15% near the exit. At a higher value of Gr with an increase in C* from 0.10, Nu is found to increase by 5.5%. Increase in Gr by 1.37 times results in enhancement of Nu by a maximum of 25-30%. Around 10% increase in overall Nu value is observed with an increase in inclination (i.e. from 30° to 60°). Practical implications This study has got applications in the various thermal field such as cooling, solar thermal and so on. Originality/value Entry region mixed convection in a shrouded inclined finned channel is performed.

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Section: Introductionmentioning

confidence: 96%

Laminar entry region mixed convection heat transfer from an inclined rectangular fin array

Roy

Giri

Das

2020

HFF

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“…Also, Yang and Yeh (2019) studied the mixed convection heat transfer in a channel with staggered fins numerically. Another interesting experimental investigation by Homod et al (2019) presented the effect of longitudinal and lateral inclination angle on mixed convection. Karlapalem et al (2019) analyzed the orientation effect for free convection on a branched fin.…”

Section: Introductionmentioning

confidence: 99%

Thermo-Hydraulic Analysis of Slightly Inclined Finned Channel under Natural Convection

2022

JAFM

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The influence of slight inclination, 'α' (i.e., 10°, 15°, and 20°) of the channel comprised of shrouded vertical rectangular non-isothermal fin array has been computationally investigated. Simulations are performed to obtain the convective coefficient of heat transfer for the different dimensionless fin spacing (S * = 0.2, 0.3, 0.5), non-dimensional fin tip to shroud clearances (C * = 0.1, 0.2 and 0.3), Grashof numbers (Gr= 1.08×10 5 , 4.42×10 5 and 11.5×10 5 ), fin lengths (L= 0.25m and 0.5m) and fin heights (H= 0.025m, 0.04m, and 0.055m). Hydrodynamic behavior of the fluid indicates that a significant amount of flow reversal occurs near the entrance of the channel at very low inclination which vanishes with the increase in inclination. Further, at higher length, reverse flow is found to occur only in the clearance zone. An increase in the value of 'α' from 10° to 20°, results in enhancement of convective coefficient up to a maximum of 161%. An increase in the value of fin spacing from 0.2 to 0.5 results in the enhancement of the convective heat transfer coefficient. At α= 15° and 20°, the heat transfer is enhanced by 84.1% and 101.6%, respectively, while at α=10°, the same is reduced by 33.3%. At lower fin spacing (S * <0.3) increase in C * tends to reduce the efficiency. Further, the efficiency of the finite conductive fin is found to reduce by almost 8% with an increase in Grashof number.

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Evaluation of energy-saving potential for optimal time response of HVAC control system in smart buildings

et al. 2020

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Empirical correlations for mixed convection heat transfer through a fin array based on various orientations

Cited by 30 publications

References 30 publications

Laminar entry region mixed convection heat transfer from an inclined rectangular fin array

Laminar entry region mixed convection heat transfer from an inclined rectangular fin array

Thermo-Hydraulic Analysis of Slightly Inclined Finned Channel under Natural Convection

Evaluation of energy-saving potential for optimal time response of HVAC control system in smart buildings

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