Numerical simulation of heat transfer characteristics of jet impingement with a novel single cone heat sink

Tang, Zhiguo; Liu, Qingqing; Li, Hai; Min, Xiaoteng

doi:10.1016/j.applthermaleng.2017.08.099

Cited by 29 publications

(15 citation statements)

References 23 publications

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“…They concluded that both heat transfer enhancement within the stagnation region and the increase of the heat transfer area led to the overall heat transfer improvement of the jet impinging on a protruding target surface. Tang et al (2017) proposed the use of a jet array cooling cone heat sink, and analyzed the influence of parameters including the cone angle, nozzle diameter, jet Reynolds number, and heat flux density on the average heat transfer performance of the cone heat sink. The results showed that the heat transfer performance of the cone heat sink was superior to that of a flat plate heat sink.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Flow and Heat Transfer Characteristics of a Liquid Jet Impinging on a Cylindrical Cavity Heat Sink

2021

JAFM

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In this study, the flow and heat transfer characteristics of a liquid jet impinging on cylindrical cavity heat sinks with a local body heat source were numerically investigated. The Transition SST turbulence model was validated and adopted. The parameters of structure and flow, including d/D = 2, 3, and 4, h/D = 0.05, 0.10, 0.15, and 0.20, and Re = 5,000, 10,000, and 23,000, were investigated. The results revealed that the adoption of a cylindrical cavity structure can improve the heat transfer capacity of the heat sink. A horseshoe vortex introduced by an inclined jet near the cavity edge region improved the heat transfer performance. The maximum enhancement of the cylindrical cavity heat sink was 11.8% compared with the flat plate heat sink when d/D = 3, h/D = 0.15, and Re = 23,000.

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Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Flow and Heat Transfer Characteristics of a Liquid Jet Impinging on a Cylindrical Cavity Heat Sink

2021

JAFM

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“…In this paper we present a numerical simulation of particular benchmark experiment performed by Tang et al [8], where the cold-water jet impinges into the novel * Corresponding author: marcin.froissart@imp.gda.pl single cone heat sink. Obtained results are the extension of the internal cooling research presented in works [2,9].…”

Section: Introductionmentioning

confidence: 99%

A study of jet impingement cooling enhancement by concave and convex heat sink shape modifications

2021

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The rising demand for efficient cooling technologies is a strong driver of extensive research in this area. This trend is particularly strong in turbines and microprocessors technology. Presented study is focused on the jet impingement cooling concept, which is used in various configurations for many years. The potential of the heat sink shape modification is not yet fully explored. Available literature suggests that average Nusselt number can be improved by more than 10% by adding conical shape in the stagnation region. This refers to the axisymmetric case where cold-water jet impinges the surface of heated aluminium. Presented results are based on 2D axisymmetric thermal-FSI (Fluid-Solid Interaction) model, which was validated against the experiment. The objective of the presented analysis is to determine the correlation between cooling effectiveness (Nusselt number) and chosen examples of concave and convex shapes located in the jet stagnation area.

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“…Ndao et al [10] experimentally investigated the influences of cross flow area and pin fin shapes on the single-phase impingement point heat transfer coefficients for micro pin fins. Tang et al [11] made numerical simulations to analyze heat transfer characteristics of jet impingement with a novel single cone heat sink. It is found that the heat transfer capability of a cone heat sink with fluid impingement is better than that of a conventional plate fin heat sink.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Flow Characteristics and Pressure Drop for an Impinging Plate Fin Heat Sink with Elliptic Bottom Profiles

Duan

et al. 2019

Applied Sciences

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The performance of impingement air cooled plate fin heat sinks differs significantly from that of parallel flow plate fin heat sinks. The impinging flow situations at the entrance and the right-angled bends of the plate fin heat sink are quite involved. Flow characteristics of a plate fin heat sink with elliptic bottom profiles cooled by a rectangular impinging jet with different inlet widths are studied by numerical simulations. The results of pressure drop of numerical simulations and experimental results match quite well. The numerical results show that at the same flow rate, the pressure drop decreases with the increase of the impingement inlet width, and the pressure drop increases significantly with the increase of the fin height. The larger the impingement inlet width of air-cooled plate fin heat sink, the milder the pressure drop changes with velocity. Pressure drop for an impinging plate fin heat sink without elliptic bottom profiles is larger than that with elliptic bottom profiles at the same inlet width and velocity. Based on the fundamental developing laminar continuum flow theory, an improved model which is very concise and nice for quick real world approximations is proposed. Furthermore, this paper verifies the effectiveness of this simple impinging pressure drop model.

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Numerical simulation of heat transfer characteristics of jet impingement with a novel single cone heat sink

Cited by 29 publications

References 23 publications

Numerical Simulation of Flow and Heat Transfer Characteristics of a Liquid Jet Impinging on a Cylindrical Cavity Heat Sink

Numerical Simulation of Flow and Heat Transfer Characteristics of a Liquid Jet Impinging on a Cylindrical Cavity Heat Sink

A study of jet impingement cooling enhancement by concave and convex heat sink shape modifications

Analysis of Flow Characteristics and Pressure Drop for an Impinging Plate Fin Heat Sink with Elliptic Bottom Profiles

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