Thermal management of Electronics: Numerical investigation of triangular finned heat sink

Hithaish, Doddamani; Saravanan, V.; Umesh, C.K.; Seetharamu, K.N.

doi:10.1016/j.tsep.2022.101246

Cited by 9 publications

(7 citation statements)

References 39 publications

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“…Furthermore, they opined that the effects of circular fin pitch and the width of the fin were insignificant. Hithaish et al [11] numerically analyzed the hydrothermal characteristics of heat sink with triangular pin-fin at different orientations (30 𝑜 𝐶 to 60 𝑜 𝐶), height of the fin (0.25𝑚𝑚-0.75𝑚𝑚) and arrangements (alternate backward and forward). They revealed that HS with triangular pin fins in alternate forward and backward configuration had the highest value of the thermal performance index.…”

Section: Theoretical Referencementioning

confidence: 99%

Heat transfer enhancement in a p-shape finned radial heat sink subjected to natural convection: Thermal significance of slot and dimples in fin

Fetuga¹,

Olakoyejo²,

Adelaja³

et al. 2022

ITEGAM

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Section: Theoretical Referencementioning

confidence: 99%

Heat transfer enhancement in a p-shape finned radial heat sink subjected to natural convection: Thermal significance of slot and dimples in fin

Fetuga¹,

Olakoyejo²,

Adelaja³

et al. 2022

ITEGAM

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“…The ribs on the side walls have a limited effect on the boundary layer of the flow channel, and the cooling performance is improved more significantly by the addition of ribs or vortex generator configuration at the bottom (Datta et al, 2019). Many studies have investigated the effect of different configurations on minichannel cooling performance (Hithaish et al, 2022;Kim et al, 2022). Zheng et al studied the effect of the height arrangement of the ribs added at the bottom on the heat transfer coefficient in the microchannel flow channel and proposed an optimization method to obtain the optimal configuration (Zheng et al, 2022b).…”

Section: Introductionmentioning

confidence: 99%

“…The triangular pin-fin heat sink is therefore the central issue of this paper. Hithaish et al (2022). At present, there are many studies on the shape, height, number, and arrangement of vortex generators.…”

Section: Introductionmentioning

confidence: 99%

Cooling performance in a minichannel heat sink with different triangular pin-fins configurations

Zhao

Sun²,

Xia

et al. 2023

Front. Energy Res.

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With the continuous progress of automotive new energy technology, the motor has become an important part of the power system, and the heat dissipation of insulated-gate bipolar transistors (IGBT) determines the reliability of the power system. Minichannel structure can be added to the thermal management system of new energy vehicles to improve the heat transfer capacity. Due to the growth of the boundary layer in the smooth minichannel flow channel, the cooling performance improvement was limited. Pin-fins and rib structures were used to break the boundary layer and increased the heat transfer area to enhance the heat transfer capacity. In this study, a numerical simulation model of minichannel with triangular pin-fins with different rotation angles was established and calculated using the SST k-omega method. The temperature field, velocity field, pressure, and vortex distribution under different configurations were discussed in detail. The jet area formed by the prism wall and the side wall of the minichannel would impact the wall and reduce the growth of the boundary layer. However, the stagnation area generated in the center and corner will reduce the improvement of heat transfer capacity. The thermo-hydraulic characteristics of different configurations at different Reynolds numbers (Re), such as Nusselt number (Nu), Darcy friction resistance coefficient (f), and performance evaluation criterion (PEC), were analyzed. As Re increased, the best and worst configurations changed, the best configuration changed from the 90°–120° structure to the 120°–120° structure, and the worst configuration changed from the 75°–60° to the 60°–60° structure. When the Re = 663, the influence of the front and rear rotation angle on the cooling performance was explored. When the rotation angle was closer to 60°, the cooling performance of the minichannel was better. And the closer the rotation angle was to 120°, the cooling performance was better. This has a reference effect on the design of minichannel heat sinks.

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“…Pallikonda et al 18 found that elliptical fins in place of straight fins in the microchannel enhance the fluid mixing due to secondary flow, which disrupts the boundary layer and is optimum at 2° orientation. Hithaish et al 19 proposed, from their numerical investigation, that an alternate forward and backward arrangement outperforms all other configurations with a thermal performance index of range 1.01–1.44. Ganji et al 20 proposed Differential Transformation Method (DTM), an analytical approach, for solving a highly nonlinear differential equation, which defines a multimode heat transfer from a straight fin with variable thermal conductivity and found a good agreement with the conventional numerical methods, Galerkin and BVM method.…”

Section: Introductionmentioning

confidence: 99%

Comparative studies on performance of plain, perforated, threaded, and threaded–perforated pin fin: A numerical approach

et al. 2023

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A heat sink is a thermal management system for electrical and electronic appliances whose performance is a function of fin geometry, arrangement, and flow field. Earlier research addressed the enhancement in the heat dissipation capacity of the sink with a change in the geometry of the fin. However, the change should increase the heat transfer rate per unit weight and per unit volume. One such attempt is made in the present work, which deals with numerical forced convection heat transfer simulation over a pin fin with three different surface modifications, namely, threads, equilateral triangular perforation, and threads with perforations. A numerical investigation is performed for 0.5773–2.5574 mm pitch of threads, 3–4.8 mm size of perforation, and 2–8 m/s velocities of air. To describe the flow pattern around the fin and its variation with surface modification, streamline profiles are drawn which reveals that the fluid–solid interaction is improved either with threaded or perforated surface and is maximum for threaded–perforated fin. The enhanced convection rates bring down the local fin temperature and the maximum fin temperature, where the drop is more for the threaded surface than that of the perforated surface because of turbulence. A 10° drop in maximum fin temperature is achieved by replacing a plain pin fin with a threaded–perforated pin fin, and the drop is 8° with threads alone and 6° only with perforations. The increased fineness of threads and size of perforation further bring down the maximum fin temperature.

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Thermal management of Electronics: Numerical investigation of triangular finned heat sink

Cited by 9 publications

References 39 publications

Heat transfer enhancement in a p-shape finned radial heat sink subjected to natural convection: Thermal significance of slot and dimples in fin

Heat transfer enhancement in a p-shape finned radial heat sink subjected to natural convection: Thermal significance of slot and dimples in fin

Cooling performance in a minichannel heat sink with different triangular pin-fins configurations

Comparative studies on performance of plain, perforated, threaded, and threaded–perforated pin fin: A numerical approach

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