Numerical analysis of the effect of a central cylindrical opening on the heat transfer of radial heat sinks for different orientations

Schmid, Gerd; Valladares-Rendón, L.G.; Yang, Tai-Her; Chen, Sih‐Li

doi:10.1016/j.applthermaleng.2017.07.051

Cited by 20 publications

(6 citation statements)

References 24 publications

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“…Over time, phase change heat transfer technology has become the focus for the future development direction of high-power LEDs. Many researchers have contributed to the development of the theory, method, design, and manufacture of the phase change heat sink [1][2][3][4][5][6][7][8]. A phase change heat sink can dissipate the heat from a high-power LED's heat source in real time.…”

Section: Introductionmentioning

confidence: 99%

Finite Element Simulation of the Machining Process of Boiling Structures in a Novel Radial Heat Sink for High-Power LEDs

et al. 2020

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A phase change heat sink has higher heat transfer efficiency compared to a traditional metal solid heat sink, and is thus more preferred for the heat dissipation of high-power light-emitting diodes (LEDs) with very high heat flux. The boiling structure at the evaporation surface is the biggest factor that affects heat sink resistance. It is necessary to investigate the plastic deformation law during the machining process of boiling structures. In this study, a novel phase change radial heat sink was developed for high-power LED heat dissipation. First, a working principle and a fabrication process for the heat sink were introduced. Subsequently, to achieve an excellent heat dissipation performance, the machining process of boiling structures was numerically simulated and investigated. To be specific, plastic deformation generated during the formation was analyzed, and key parameters related to the morphology of the boiling structures were discussed including feeding angles and machining depths. Moreover, the finite element (FE) simulation results were compared with those of experiments. Last but not least, the heat transfer performance of the fabricated heat sink was tested. Results showed that the developed heat sink was well suited for a high-power LED application.

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Section: Introductionmentioning

confidence: 99%

Finite Element Simulation of the Machining Process of Boiling Structures in a Novel Radial Heat Sink for High-Power LEDs

et al. 2020

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“…However, it is possible to note that the study of the configuration of the system and the position of the components has been neglected in several tests. As an example, the configuration of the heat sink and its position in electronic circuit board can play a significant part in the vibration strength and its effects on the other components (Patin, 2015;Schmid et al, 2017;Mihalis, 2001;Gu et al, 2018). In this study, we aim to demonstrate the effects of circuit architecture and arrangement on the mechanical reliability of BGA electronic packages.…”

Section: Introductionmentioning

confidence: 99%

Device architecture optimization of solder ball joints fatigue lifetime under random vibration frequencies

Gao

Wang

Ding

et al. 2020

SSMT

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“…Natural convection is commonly used in the cooling way of LED lamps and lanterns [15,16,17,18,19]. With the increase of thermal conductivity and cooling area of the radiator, the temperature distribution of LED lamps and lanterns can be improved.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation, Machining and Testing of a Phase Change Heat Sink for High Power LEDs

et al. 2019

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Thermal management is crucial to guarantee the normal operation of light-emitting diodes (LEDs) Phase change heat sink is superior to traditional metal solid heat sink due to very small thermal resistance. In this study, a new type of phase change heat sink for high power LEDs is first designed. Then, the fabrication process of boiling structures at the evaporation surface of the phase change heat sink is discussed and analyzed. To make a comparison and deep discussion, the machining process is simulated through the FEM (finite element analysis) software, DEFORM-3D. Last but not least, heat transfer performance of the fabricated phase change heat sink is tested. Results have shown that the designed new type of phase change heat sink has superior heat transfer performance and is suitable for heat dissipation of high-power LEDs.

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Numerical analysis of the effect of a central cylindrical opening on the heat transfer of radial heat sinks for different orientations

Cited by 20 publications

References 24 publications

Finite Element Simulation of the Machining Process of Boiling Structures in a Novel Radial Heat Sink for High-Power LEDs

Finite Element Simulation of the Machining Process of Boiling Structures in a Novel Radial Heat Sink for High-Power LEDs

Device architecture optimization of solder ball joints fatigue lifetime under random vibration frequencies

Numerical Simulation, Machining and Testing of a Phase Change Heat Sink for High Power LEDs

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