Numerical study on thermal performance of lotus type copper porous heat sink

2021 ◽  
Author(s):  
Rohith Joison ◽  
Vivek Babu ◽  
A. Kannan ◽  
Azher Muhammed ◽  
G. Harikrishnan
Keyword(s):  
Thermal Performance ◽  
Heat Sink ◽  
Numerical Study

An Investigation of the Effect of interrupted fin arrangements on the Thermal Performance of a Heat Sink under a Free Convection Condition

2019 ◽  
Vol 7 (1) ◽  
pp. 43-53
Author(s):  
Abbas Jassem Jubear ◽  
Ali Hameed Abd
Keyword(s):  
Heat Transfer ◽  
Steady State ◽  
Natural Convection ◽  
Thermal Performance ◽  
Heat Sink ◽  
Numerical Study ◽  
Ansys Fluent ◽  
Fluent Software ◽  
Steady State Heat ◽  
Steady State Heat Transfer

The heat sink with vertically rectangular interrupted fins was investigated numerically in a natural convection field, with steady-state heat transfer. A numerical study has been conducted using ANSYS Fluent software (R16.1) in order to develop a 3-D numerical model.  The dimensions of the fins are (305 mm length, 100 mm width, 17 mm height, and 9.5 mm space between fins. The number of fins used on the surface is eight. In this study, the heat input was used as follows: 20, 40, 60, 80, 100, and 120 watts. This study focused on interrupted rectangular fins with a different arrangement and angle of the fins. Results show that the addition of interruption in fins in various arrangements will improve the thermal performance of the heat sink, and through the results, a better interruption rate as an equation can be obtained.

scholarly journals Thermal Performance Evaluation of a Phase Change Material Based Heat Sink: A Numerical Study

2016 ◽  
Vol 25 ◽  
pp. 1182-1190 ◽  
Author(s):  
Jesto Thomas ◽  
P.V.S.S. Srivatsa ◽  
S. Ramesh Krishnan ◽  
Rajesh Baby
Keyword(s):  
Performance Evaluation ◽  
Phase Change ◽  
Phase Change Material ◽  
Thermal Performance ◽  
Heat Sink ◽  
Numerical Study ◽  
Change Material

Numerical Modeling of Buoyancy Induced Convection in Finned Heat Sinks in Presence of Unheated and Heated Shrouds

2005 ◽  
Author(s):  
S. S. Bahga ◽  
A. Bhattacharya ◽  
Roop L. Mahajan
Keyword(s):  
Heat Transfer ◽  
Thermal Performance ◽  
Heat Sink ◽  
Numerical Study ◽  
Numerical Results ◽  
Heat Sinks ◽  
Maximum Heat ◽  
Maximum Heat Transfer ◽  
Wide Range ◽  
The Impact

This paper investigates the effects of the presence of unheated and heated shrouds on the thermal performance of longitudinal finned heat sinks. A comprehensive numerical study was conducted to determine the impact of the shroud clearance from the tip of the fins and shroud heating. The first part of the study deals with the effects of an unheated shroud on finned heat sinks of different fin height, fin pitch and length in an attempt to cover a wide range of geometry. The numerical results reveal an optimum clearance for maximum heat transfer. For all heat sinks studied the unheated shroud improved the performance by as much as 15% until the shroud was very close when the performance decreased by as much as 10%. In the second part of the paper, the effects of heating of the shroud were considered. In these numerical runs, an isothermal boundary condition was imposed on the shroud. For the heating levels considered, it was found that heating of the shrouds can increase or lower the thermal performance of the heat sink depending on the heat sink geometry and shroud clearance. Finally, the numerical results also revealed a systematic dependence of the normalized Nusselt number on the Rayleigh number for a given heat sink geometry.

Numerical study of the thermal performance of a novel microchannel heat sink

2021 ◽  
Author(s):  
Tingfang Yu ◽  
Zhaoliang Feng ◽  
Ying Zhang ◽  
Xuefeng Xu ◽  
Meng Xu
Keyword(s):  
Thermal Performance ◽  
Heat Sink ◽  
Numerical Study ◽  
Microchannel Heat Sink

Numerical Study on the Thermal Performance of a Substrate Integrated Thermal Buffer Heat Sink

2011 ◽  
Author(s):  
Nicholas R. Jankowski ◽  
F. Patrick McCluskey
Keyword(s):  
Thermal Performance ◽  
Temperature Rise ◽  
Heat Sink ◽  
Thermal Loading ◽  
Numerical Study ◽  
Thermal Capacity ◽  
Smoothing Function ◽  
Transient Temperature ◽  
Thermal Transients ◽  
Polynomial Smoothing

This report describes a parametric numerical study of a substrate integrated Thermal Buffer Heat Sink (TBHS) used to reduce transient temperature rise of power electronic devices. Linear and non-linear finite element models of the substrate unit cell are developed including a polynomial smoothing function to approximate phase change using the apparent capacity method (ACM). Parameters investigated include substrate geometry, convection rate and heat load. These parameters are examined for steady state and transient thermal loading conditions, and substrate thermal performance is evaluated for each case. Specifically the TBHS design tradeoff between thermal resistance and thermal capacity is quantified, and the ability of the TBHS structure to reduce peak temperature rise for certain transient load conditions is evaluated. It is demonstrated that for short thermal transients a particular TBHS design can suppress temperature rise by 19.6°C (35%) when compared to an equivalent standard microchannel heat sink.

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