An Experimental Study of Enhancement of Forced Convection Heat Transfer From Parallel Plate Fins With Cuts

Pis’mennyi, Eugene; Rogachev, V. A.; Терех, А. М.; Polupan, Georgiy; Carvajal-Mariscal, Ignacio; Nezym, Vitaliy

doi:10.1615/ihtc13.p17.220

Cited by 2 publications

(4 citation statements)

References 2 publications

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“…The investigated heat sink (10) was installed in the working section. Heating of the heat sink was carried out with a spiral ohmic electric heater (12). It was placed inside an insulated casing with an outer diameter of 50 mm.…”

Section: Methodsmentioning

confidence: 99%

“…The proposed forms of correlations for heat transfer (12) and aerodynamic drag (13) are suitable for a wide range of heat sink geometrical sizes and fins quantity. But in some cases, additional experimental investigations are necessary for the specification of coefficients Cq, CS and exponents m and n. Coefficients and exponents listed in Table 2 are applicable to heat sinks with the same ratio between the height, length, thickness and fin pitch, the same taper angle and relative depth of fin cutting as for the investigated heat sinks.…”

Section: Aerodynamic Dragmentioning

confidence: 99%

“…A lot of publications are dedicated to the investigation of characteristics of small-sized heat dissipating flat surfaces with plate-split fins with the turning of incised parts of fins in relation to flow designed for cooling of electronic devices under forced convection (Re = 2 00010 000). Results of the experimental study of heat transfer of such surfaces are presented in [12] and of aerodynamic dragin [13]. In [14], eight types of surfaces with different cutting depths and angles of turning were experimentally investigated.…”

mentioning

confidence: 99%

“…Results of the experimental study of heat transfer of such surfaces are presented in [12] and of aerodynamic dragin [13]. In [14], eight types of surfaces with different cutting depths and angles of turning were experimentally investigated. The influence of fins cutting and turning of cut parts on thermal and aerodynamic characteristics of heat sinks is studied in [15] by means of CFD modelling.…”

mentioning

confidence: 99%

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Experimental investigation of heat transfer and aerodynamic drag of novel heat sinks with lamellar fins

Terekh,

Rudenko,

Alekseik

2024

Archives of Thermodynamics

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Heat transfer and aerodynamic drag of novel small-sized heat sinks with lamellar fins, designed for electronic cooling, were experimentally investigated under conditions of forced convection in the range of Reynolds numbers 1 250–10 500. It was found that a gradual reduction in the fin spacing from 6 mm to 3 mm with a 29° angle of taper between the outermost fins leads to an increase in the heat transfer intensity by 15–32% with a significant increase in aerodynamic drag compared to the surface with a constant fin spacing of 6 mm. Incomplete cross-section cutting of fins at the relative depth of 0.6 in addition to the gradual reduction in the fin spacing provides aerodynamic drag decrease by 5–20% and increase of heat transfer intensity by 18–20% in comparison with the similar heat sink without fins cutting. Proposed novel designs of heat sinks enabled us to decrease by 7°С–16°С the maximum overheating of the heat sink's base in the flow speed range from 2.5 m/s to 7.5 m/s at constant heat load. To ensure a constant value of maximum overheating of the heat sink base the inlet flow velocity for the surface with constant fin spacing should be 1.6–2 times higher than that for the heat sink with 29° taper angle between outermost fins and partially fins cutting. In this case, the aerodynamic drag for the latter will be higher only by 1.6–2.7 times, which is quite acceptable.

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Section: Methodsmentioning

confidence: 99%

Section: Aerodynamic Dragmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Experimental investigation of heat transfer and aerodynamic drag of novel heat sinks with lamellar fins

Terekh,

Rudenko,

Alekseik

2024

Archives of Thermodynamics

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Convective Heat Transfer of Heat Sinks With Partially Cut Plate Fins and Turning of Their Cut Sections

Baranova

Zhukova²,

Chorny³

et al. 2023

Heat Trans Res

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Plate-fin heat sinks are widely used for cooling radio electronic, power electronic, and telecommunication components. The current trends in the development of radio and microelectronic systems dictate the need to dissipate large heat fluxes. The present article uses the methods of numerical simulation, verified by experimental data, to study convective heat transfer of different-type heat sinks with partially cut plate fins. The heat sink with partially cut plate fins served as the basis of study. Three types of heat sinks with extended surfaces were also considered. First, we analyzed the fin cut section turned at an angle of 30° and then - the fin cut section with diverging or converging shape. Comparing the thermal and hydraulic performance of such heat sinks showed that the thermal and hydraulic performance of heat sinks with a fin cut section with diverging shape at a turning angle of 30° is by 10% higher than that of heat sinks with partially cut plate fins. As the velocity distribution in the wake shows, the use of heat sinks with partially cut plate fins and turning of their cut sections for cooling real microelectronic devices needs to correctly design an installation, in which the device is located.

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An Experimental Study of Enhancement of Forced Convection Heat Transfer From Parallel Plate Fins With Cuts

Cited by 2 publications

References 2 publications

Experimental investigation of heat transfer and aerodynamic drag of novel heat sinks with lamellar fins

Experimental investigation of heat transfer and aerodynamic drag of novel heat sinks with lamellar fins

Convective Heat Transfer of Heat Sinks With Partially Cut Plate Fins and Turning of Their Cut Sections

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