Experimental and Numerical Investigation of Forced Convection Heat Transfer in Heat Sink with Rectangular Plates at Varying Inclinations on Vertical Base

Patil, Harshal; Dingare, Sunil

doi:10.1007/s40032-018-0445-7

Cited by 7 publications

(3 citation statements)

References 5 publications

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“…Furthermore, for a given air stream, the maximum forced convection HTC is expected to be present for attached boundary layers at small angles of attack, as the HTC was found here to decrease significantly with increased angle of attack (see Figure 11). This is comparable to results from Test et al [22,38], which again support the reliability of these results.…”

Section: Discussionsupporting

confidence: 90%

Experimental and Numerical Investigation of a Multifunctional CFRP towards Heat Convection under Aircraft Icing Conditions

et al. 2022

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A combined experimental and numerical approach for the analysis of convective heat transfer from a multifunctional flat plate specimen under aircraft icing conditions is presented. The experimental setup including a heat control and measurement system that is installed in a de-icing test bed. The ambient temperature (θa=[253,283]K), air velocity (va={0,15,30}ms), and angle of attack (α={10,30}∘) are varied, and their influence on heat transfer during local Joule heating is discussed. The numerical approach utilises the results to compute the convective heat transfer coefficients (HTC) based on Newton’s convective heat transfer condition. Results indicate that the numerical model represents the heat transfer behaviour with high accuracy. The HTC for free convection was found to hold h¯≈2.5Wm2K and h¯≈[10,40]Wm2K for forced convection conditions with minor scattering. The increase in HTC under forced convection conditions has a significant effect on the overall heat transfer behaviour, resulting in high temperature gradients within the material. The functional optimisation of multifunctional structures will benefit from including application related convection conditions, dealing with resulting temperature fields by structural design. It is expected that multifunctional structures for de-icing as well as for structural energy storage, morphing structures, or stiffness adaptive structures with similar material constituents will benefit from this recognition.

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Section: Discussionsupporting

confidence: 90%

Experimental and Numerical Investigation of a Multifunctional CFRP towards Heat Convection under Aircraft Icing Conditions

et al. 2022

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“…The current study was conducted for heat sinks commonly employed in various industrial applications, including but not limited to the cooling of small electronic components, central processing units (CPUs) in personal computers and data centers, electronic boards, advanced electronic chips, electrical devices such as computer power supplies and substation transformers, the aerospace sector, and the cooling of fuel elements in nuclear reactors (Upalkar et al, 2020). [29][30][31][32][33] In the existing literature on heat sink optimization through perforations, the majority of studies have concentrated on single types of perforations (Zohora et al, 2023), 2,8,11,34,35 leading to a fragmented understanding of circular perforated cylindrical fin pin heat sink performance.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental and numerical studies of the effect of perforation configuration on heat transfer enhancement of pin fins heat sink

Alpha,

Aondover,

Kuhe

2024

Heat Trans

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In this study, experimental and computational studies of the impact of forced convective flow on the heat transfer characteristics of staggered pin fins with perforations are investigated in a rectangular channel at constant heat flux with Reynolds numbers (Re) of 2 × 103–12 × 103. In particular, cylindrical pin fins with circular longitudinal (L) perforation, longitudinal/transverse (LT) perforation, and longitudinal/transverse/vertical (LTV) perforation perforations are compared to solid pin fins to find out how adding different perforation arrays affects overall heat transfer performance and also to find the best perforation configuration for maximum performance. ANSYS‐FLUENT is employed for numerical simulation, validated by experimental data. Experimental validation is conducted by attaching the heat sink to a Peltier module, inducing heat generation through current on one face in the Armfield Free and Forced Convection Heat Transfer Service Units HT 19 and HT10XC. Results highlight significant increases in Nusselt number (Nu) for perforated pins compared to solid pins, with L perforations at 8%, LT perforations at 33%, and 67% for LTV perforated pins due to transverse perforations that act as slots, which stir up the primary flow and induce secondary flow generated by vertical perforations. Regarding pressure drops, L perforations reduce by 9%, LT by 19%, and LTV by 27% compared to solid pins. The overall enhancement ratio peaks at the minimum Reynold number, notably achieving a 38% increase in the LTV perforation pin fin array. This innovative study holds promise for diverse electronic applications, offering enhanced heat transfer performance in electronic cooling systems.

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Numerical analysis of ball-type turbulators in tube heat exchangers with computational fluid dynamic simulations

Afshari

Zavaragh

Nicola

2018

Int. J. Environ. Sci. Technol.

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Experimental and Numerical Investigation of Forced Convection Heat Transfer in Heat Sink with Rectangular Plates at Varying Inclinations on Vertical Base

Cited by 7 publications

References 5 publications

Experimental and Numerical Investigation of a Multifunctional CFRP towards Heat Convection under Aircraft Icing Conditions

Experimental and Numerical Investigation of a Multifunctional CFRP towards Heat Convection under Aircraft Icing Conditions

Experimental and numerical studies of the effect of perforation configuration on heat transfer enhancement of pin fins heat sink

Numerical analysis of ball-type turbulators in tube heat exchangers with computational fluid dynamic simulations

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