Experimental and numerical study of natural convection heat transfer from arrays of zigzag fins

Davoodi, Hossein; Yaghoubi, M.

doi:10.1007/s00231-018-2449-5

Cited by 9 publications

(2 citation statements)

References 14 publications

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“…Also, to reduce the fin material and improve the natural convective heat transfer the variation of fin height is investigated by Jeon and Byon (2017), Pathak et al (2018), andHuang et al (2019). Davoodi and Yaghoubi (2018) experimentally compared triangular zig-zag fins with rectangular plated fins for maximum free convection. Feng et al (2018) analyzed both numerically and experimentally the modification from the convectional plated fin array to the crossfin array for a horizontal arrangement.…”

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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Section: Introductionmentioning

confidence: 99%

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

2022

JAFM

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“…Figure 1. Convective heat transfer coefficient plotted against the temperature difference at 3.75 mm spacing[12] …”

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confidence: 99%

Experimental Investigation of Micro fins for Heat Transfer Enhancement by using Copper, Aluminum and Aluminum with Paint Coating as a Micro fins

Bhalerao,

Arakerimath

2020

Journal of Thermal and Fluid Science

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Computer applications have lately embraced micro technologies. Microtechnologies are now being used in many cooling systems, but the thermal efficiency of micro-fins under forced convective heat transfer conditions is still a little bit of an unknown. Despite previous research, micro finned array architecture cannot be optimally optimized based on Heat transfer coefficients and fine geometry correlations. This study first time integrates a variety of heat sink measurements to offer an overview of microfin behavior. Mass-specific heat transfer coefficient of penalties and efficiency of the fins.Results from an original experiment are combined in this process with the most recent data available in the literature. Microfins are always determined to be favorable in terms of material utilization. There may be advantages to using these light micro fins in applications that need a heat sink to have a minimum weight. In addition, the direction has a modest influence.

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Geometric optimization of compressor head fin body for effective heat transfer by finite element method

Shinde

Diwan

Niranjan

et al. 2022

Int J Interact Des Manuf

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Experimental and numerical study of natural convection heat transfer from arrays of zigzag fins

Cited by 9 publications

References 14 publications

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

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

Experimental Investigation of Micro fins for Heat Transfer Enhancement by using Copper, Aluminum and Aluminum with Paint Coating as a Micro fins

Geometric optimization of compressor head fin body for effective heat transfer by finite element method

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