Numerical evaluation on thermal–hydraulic characteristics of dilute heat-dissipating nanofluids flow in microchannels: Comparison of different models
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Author list: Keshavarz Moraveji M., Barzegarian R., Bahiraei M., Barzegarian M., Aloueyan A., Wongwises S.
Publisher: Springer Verlag (Germany) / Akadémiai Kiadó
Publication year: 2019
Journal: Journal of Thermal Analysis and Calorimetry (1388-6150)
Volume number: 135
Issue number: 1
Start page: 671
End page: 683
Number of pages: 13
ISSN: 1388-6150
eISSN: 1588-2926
Languages: English-Great Britain (EN-GB)
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Abstract
The present work deals with numerical investigations on heat transfer characteristics and friction factor of aqueous CuO nanofluids flow in a set of four microchannels connected in parallel under laminar regime. For each single phase, volume of fluid, mixture and Eulerian models, a particular computer code is developed to carefully simulate this problem. The three-dimensional steady-state governing equations are solved through finite volume method. The primary aim of this study is to comparatively distinguish the most appropriate and accurate model for numerical studies of nanofluids in microchannels. The results are compared with one another and the data obtained from an experimental work. Regarding the results, an acceptable consistency is observed for all models with the experimental data. The current study truly demonstrates that applying single-phase model to simulate and evaluate the laminar flow of CuO–water nanofluid inside microchannels with uniform wall temperature is more modest, precise and reliable compared with two-phase models. © 2018, Akadémiai Kiadó, Budapest, Hungary.
Keywords
Single-phase model, Two-phase models
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