Multi-objective Optimal Thermal Heat Sink Design Using Evolutionary Method

2015 ◽  
Vol 72 (2) ◽  
Author(s):  
Mohd Zainolarifin Mohd Hanafi ◽  
Fatimah Sham Ismail
Keyword(s):  
Heat Sink ◽  
Multi Objective ◽  
Evolutionary Method ◽  
Heat Sink Design

Optimal Structural Design of a Heat Sink With Laminar Single-Phase Flow Using Computational Fluid Dynamics-Based Multi-Objective Genetic Algorithm

2017 ◽  
Vol 140 (2) ◽  
Author(s):  
Ya Ge ◽  
Feng Shan ◽  
Zhichun Liu ◽  
Wei Liu
Keyword(s):  
Genetic Algorithm ◽  
Heat Sink ◽  
Volumetric Flow Rate ◽  
Pareto Solutions ◽  
Nondominated Solutions ◽  
Multi Objective ◽  
Multi Objective Genetic Algorithm ◽  
Conflicting Objectives ◽  
Order Preference ◽  
General Method

This paper proposes a general method combining evolutionary algorithm and decision-making technique to optimize the structure of a minichannel heat sink (MCHS). Two conflicting objectives, the thermal resistance θ and the pumping power P, are simultaneously considered to assess the performance of the MCHS. In order to achieve the ultimate optimal design, multi-objective genetic algorithm is employed to obtain the nondominated solutions (Pareto solutions), while technique for order preference by similarity to an ideal solution (TOPSIS) is employed to determine which is the best compromise solution. Meanwhile, both the material cost and volumetric flow rate are fixed where this nonlinear problem is solved by applying the penalty function. The results show that θ of Pareto solutions varies from 0.03707 K W−1 to 0.10742 K W−1, while P varies from 0.00307 W to 0.05388 W, respectively. After the TOPSIS selection, it is found that P is significantly reduced without increasing too much θ. As a result, θ and P of the optimal MCHS determined by TOPSIS are 35.82% and 52.55% lower than initial one, respectively.

Thermal analysis of high concentrator photovoltaic module using convergent-divergent microchannel heat sink design

2021 ◽  
Vol 183 ◽  
pp. 116201
Author(s):  
Abdallah Y.M. Ali ◽  
Essam M. Abo-Zahhad ◽  
Hesham I. Elqady ◽  
Mohammed Rabie ◽  
M.F. Elkady ◽  
...  
Keyword(s):  
Thermal Analysis ◽  
Heat Sink ◽  
Photovoltaic Module ◽  
Microchannel Heat Sink ◽  
Heat Sink Design

scholarly journals Performance assessment of density and level-set topology optimisation methods for three dimensional heat sink design

2018 ◽  
Vol 12 (3) ◽  
pp. 273-287 ◽  
Author(s):  
Mani Sekaran Santhanakrishnan ◽  
Timothy Tilford ◽  
Christopher Bailey
Keyword(s):  
Level Set Method ◽  
Level Set ◽  
Heat Sink ◽  
Three Dimensional ◽  
Engineering Problem ◽  
Topology Optimisation ◽  
Design Quality ◽  
Advantages And Disadvantages ◽  
Computational Speed ◽  
Heat Sink Design

In this paper, two most prevalent topological optimisation approaches namely Density and Level set method are applied to a three dimensional heat sink design problem. The relative performance of the two approaches is compared in terms of design quality, robustness and computational speed. The work is original as for the first time it demonstrates the relative advantages and disadvantages for each method when applied to a practical engineering problem. It is additionally novel in that it presents the design of a convectively cooled heat sink by solving full thermo-fluid equations for two different solid-fluid material sets. Further, results are validated using a separate computational fluid dynamics study with the optimised designs are compared against a standard pin-fin-based heat sink design. The results show that the Density method demonstrates better performance in terms of robustness and computational speed, while Level-set method yields a better quality design in terms of final objective value.

Thermo-economic Limitations of Ambient Heat Rejection in Vertical Fin Arrays With Buoyancy-Driven Flow Enhancement Through the Chimney Effect

2016 ◽  
Vol 9 (1) ◽  
Author(s):  
Noris Gallandat ◽  
J. Rhett Mayor
Keyword(s):  
Heat Flux ◽  
Heat Sink ◽  
Cooling Power ◽  
Heat Rejection ◽  
One Dimensional ◽  
Power Enhancement ◽  
Flow Enhancement ◽  
The Cost ◽  
Heat Sink Design ◽  
Chimney Effect

This paper presents the thermo-economic limits of ambient heat rejection in vertical fin arrays with buoyancy-driven flow enhancement through the chimney effect. A one-dimensional semi-analytical thermo-fluidic model is developed to assess the cooling power enhancement of the proposed heat sink design. A bi-objective optimization is performed utilizing genetic algorithm to present the tradeoffs between the cost and the thermal performance of a heat sink. For the considered baseplate geometry, the maximal cooling power without a chimney amounts 1540 W at a heat flux of 1.03 W/cm2. By adding a chimney up to 2.5 m high, the cooling power is increased by 46% to 2250 W at a heat flux of 1.50 W/cm2.

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