Constructal design of single microchannel heat sink with varying axial length and temperature-dependent fluid properties
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Date
2016
Authors
Adewumi, O.O
Bello-Ochende, T.
Meyer, J.P
Journal Title
Journal ISSN
Volume Title
Publisher
International Journal of Heat and Technology
Abstract
The objective of this numerical study is to investigate the best geometric configuration that maximises heat transfer from the heated base by allowing both the length of the solid substrate and the microchannel heat sink freedom to morph. The thermal performance of the microchannel is based on the minimised peak temperature on the heated surface which gives a global minimised thermal resistance. The optimisation of the geometric parameters of the heat sink and solid substrate is carried out using a computational fluid dynamics code with a goal-driven optimisation algorithm. Results of the effect of Bejan number on the minimised peak temperature and minimised thermal resistance for solid substrate with varying axial lengths of 1 to 10 mm but fixed volume of 0.9 mm3 is presented. Results of optimal channel aspect ratio, solid volume fraction and channel hydraulic diameter of the microchannel were also presented.
Description
Staff publications
Keywords
Forced convection , Minimised peak temperature , Minimised thermal resistance , Microchannel , Aspect ratio , Research Subject Categories::TECHNOLOGY::Engineering mechanics
Citation
Adewumi, O. O., Bello-Ochede, T., & Meyer, J. P. (2016). Constructal design of single microchannel heat sink with varying axial length and temperature-dependent fluid properties.