Numerical study on layout of micro-channel heat sink for thermal management of electronic devices

Gong, Liang; Zhao, Jin; Huang, Shanbo

doi:10.1016/j.applthermaleng.2014.09.048

Cited by 88 publications

(25 citation statements)

References 18 publications

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“…A good description of the major numerical methods is given, for example, in [1][2][3][4][5][6]. Here they allow numerical modelling of complicated physical processes [7][8][9][10][11][12][13][14][15][16][17][18][19], including multidimensional heat transfer in rectangles and cylinders [20][21][22][23]. However, proper understanding of the solutions and of the obtained results can be best done when they are obtained in analytical form.…”

Section: Introductionmentioning

confidence: 99%

Operational Approach and Solutions of Hyperbolic Heat Conduction Equations

Zhukovsky

2016

Axioms

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Abstract:We studied physical problems related to heat transport and the corresponding differential equations, which describe a wider range of physical processes. The operational method was employed to construct particular solutions for them. Inverse differential operators and operational exponent as well as operational definitions and operational rules for generalized orthogonal polynomials were used together with integral transforms and special functions. Examples of an electric charge in a constant electric field passing under a potential barrier and of heat diffusion were compared and explored in two dimensions. Non-Fourier heat propagation models were studied and compared with each other and with Fourier heat transfer. Exact analytical solutions for the hyperbolic heat equation and for its extensions were explored. The exact analytical solution for the Guyer-Krumhansl type heat equation was derived. Using the latter, the heat surge propagation and relaxation was studied for the Guyer-Krumhansl heat transport model, for the Cattaneo and for the Fourier models. The comparison between them was drawn. Space-time propagation of a power-exponential function and of a periodic signal, obeying the Fourier law, the hyperbolic heat equation and its extended Guyer-Krumhansl form were studied by the operational technique. The role of various terms in the equations was explored and their influence on the solutions demonstrated. The accordance of the solutions with maximum principle is discussed. The application of our theoretical study for heat propagation in thin films is considered. The examples of the relaxation of the initial laser flash, the wide heat spot, and the harmonic function are considered and solved analytically.

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Section: Introductionmentioning

confidence: 99%

Operational Approach and Solutions of Hyperbolic Heat Conduction Equations

Zhukovsky

2016

Axioms

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“…Saglietti et al (2017) performed adjoint optimization of the natural convection problems in the differentially heated cavity. Tigner et al (2013) and Gong et al (2015) studied the thermal management of the electronic devices.…”

Section: Frontiers In Heat and Mass Transfermentioning

confidence: 99%

“…Cuce and Cuce (2014) optimized the configurations to enhance heat transfer from a longitudinal fin exposed to natural convection and radiation. Gong et al (2015) made a numerical study on layout of micro-channel heat sink for thermal management of electronic devices. Hotta and Venkateshan (2015) developed a technique for the optimal distribution of discrete heat sources under natural convection based on artificial neural network (ANN) and genetic algorithm (GA).…”

Section: Introductionmentioning

confidence: 99%

A Systematic Approach for Optimal Positioning of Heated Side Walls in a Side Vented Open Cavity Under Natural Convection and Surface Radiation

Gupta¹,

Prasad²,

Singh³

2018

Frontiers in Heat and Mass Transfer

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A systematic approach for the optimal positioning of multiple isothermal heat sources mounted on the walls of a side vented open cavity filled with natural air (Pr = 0.70) under natural convection and surface radiation is discussed. A numerical investigation is performed for the different possible cases with the two isothermal heat sources of equal dimensions mounted on the walls of the cavity. The geometrical parameters like the aspect ratio (A = 2), side vent ratio (W1 = 0.50) and side port ratio (W2 = 0.50) along with the most pertinent parameters like Rayleigh Number (10 4 ≤ Ra ≤ 10 7 ) and the surface emissivity of walls (0.05 ≤ ε ≤ 0.85) are the prime governing parameters in the different cases.

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“…They determined the optimal groove shape that maximizes the overall system performance. To improve the structures of the microchannel heat sinks for cooling the chips, Gong et al (2015) investigated the flow and heat transfer in four types of heat sinks (traditional microchannel heat sink, rectangular column fin heat sink, singlehole jet-cooling heat sink and double-layer microchannel heat sink), numerically. The results showed that the arrangement optimization of the microchannel heat sinks can improve the thermal performance of the inlet header by boosting the flow distribution uniformity.…”

Section: Introductionmentioning

confidence: 99%

Numerical Optimization of an Array of Triangular Microchannels using Constructal Theory

Mardani

Salimpour

2019

JAFM

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In the present study, an arrangement of triangular microchannels with different contact angles is analyzed and optimized following the guidelines provided by the constructal theory to reach to the maximum heat removal rate. This investigation is performed analytically and numerically. Based on the obtained results, it is emerged that this optimization is independent of the number and the type of the arrangement of the microchannels. It is also observed that increasing the pressure drop through the triangular microchannels decreases the optimal hydraulic diameter. Numerical results recommend that the microchannel with contact angle of 60° possesses the highest heat transfer rate at a given pressure drop, and decreasing the contact angle of the triangular crosssection leads to lower heat transfer rates. Comparing the analytical and numerical results of the optimal hydraulic diameter of the microchannel heat sinks, a reasonable agreement is observed; however, due to some assumptions which are considered at the analytical method, the analytical predictions of the configurations having the highest heat transfer rate are inaccurate. Therefore, the numerical optimization should be used to choose the configuration with the highest cooling capacity.

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Numerical study on layout of micro-channel heat sink for thermal management of electronic devices

Cited by 88 publications

References 18 publications

Operational Approach and Solutions of Hyperbolic Heat Conduction Equations

Operational Approach and Solutions of Hyperbolic Heat Conduction Equations

A Systematic Approach for Optimal Positioning of Heated Side Walls in a Side Vented Open Cavity Under Natural Convection and Surface Radiation

Numerical Optimization of an Array of Triangular Microchannels using Constructal Theory

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