JP Journal of Heat and Mass Transfer
Volume 17, Issue 1, Pages 183 - 188
(June 2019) http://dx.doi.org/10.17654/HM017010183 |
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INVESTIGATION ON THERMOHYDRAULIC CHARACTERISTICS OF Al2O3 BASED NANOFLUIDS IN MICROCHANNELS
Chandrachur Chatterjee, Rahul Agarwal, Raja Sekhar Dondapati and Vishnu Saini
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Abstract: Microchannels are incorporated in various engineering systems, including defense applications such as thermal imaging systems, to cool the electronic components, which dissipate heat during operation. However, the cooling capacity is limited due to the properties of cooling media. Hence, the present work is focused on the investigation of pressure-drop and heat transfer characteristics for the flow of Al2O3-water nanofluid in microchannels. Two microchannels with trapezoidal configuration having hydraulic diameter of 301µm and 212µm with steady, laminar flow of Al2O3-water nanofluid at 1% volume concentration has been considered for the analysis. Computational modeling using ANSYS-FLUENT has been carried out using single phase homogeneous mixture model. Effect of hydraulic diameter on pressure drop and heat transfer due to flow through microchannels are presented. Further, a comparison with the base fluid has been done to identify the enhancement in heat transfer. In addition, the temperature profiles with pure water in trapezoidal microchannels have been compared with those of nanofluid for different hydraulic diameters. |
Keywords and phrases: nanofluids, computational modeling, pressure drop, heat transfer.
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