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Article

Effects of Different Wall Shapes on Thermal-Hydraulic Characteristics of Different Channels Filled with Water Based Graphite-SiO2 Hybrid Nanofluid

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Mechanical Engineering Department, Faculty of Engineering, King Abdulaziz University, Jeddah 80204, Saudi Arabia
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Center Excellence of Renewable Energy and Power, King Abdulaziz University, Jeddah 80204, Saudi Arabia
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Department of Electrical Engineering, College of Engineering, Taif University, Taif 21944, Saudi Arabia
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Architectural Engineering Department, Faculty of Engineering, Taif University, Taif 21944, Saudi Arabia
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Independent Researcher, Dubai 999041, United Arab Emirates
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Department of Mechanical and Aeronautical Engineering, University of Pretoria, Hatfield 0028, South Africa
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Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 404, Taiwan
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Technische Universität Braunschweig, 38106 Braunschweig, Germany
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Authors to whom correspondence should be addressed.
Academic Editor: Hussein A. Mohammed
Received: 12 June 2021 / Revised: 12 July 2021 / Accepted: 16 July 2021 / Published: 20 July 2021
(This article belongs to the Special Issue Advance in Nanocomposites and Nanofluids)
In the current numerical study, various wall shape effects are investigated on the thermal-hydraulic characteristics of different channels filled with water-based graphite-SiO2 hybrid nanofluid. In this work, the performance evaluation criteria (PEC) index is employed as the target parameter to attain optimum geometry. Six different cases are studied in this research, and each case has different geometrical dimensions. The inlet temperature for the fluids in the channel is 300 K, over a range of different flow velocities. According to the obtained results, an increase in the volume fraction of nanoparticles results in higher PEC values. In addition, an increase in Reynolds number to Re = leads to an increase in the PEC index. The results clearly show that increasing the Reynolds number has two consequences: on the one hand, it increases the pressure drop penalty; on the other hand, it improves heat transfer. Therefore, the maximum value of the PEC index occurs at Re = 15,000. View Full-Text
Keywords: hybrid nanofluid; PEC; graphite-SiO2; channel; different wall hybrid nanofluid; PEC; graphite-SiO2; channel; different wall
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MDPI and ACS Style

Khetib, Y.; Alahmadi, A.; Alzaed, A.; Tahmasebi, A.; Sharifpur, M.; Cheraghian, G. Effects of Different Wall Shapes on Thermal-Hydraulic Characteristics of Different Channels Filled with Water Based Graphite-SiO2 Hybrid Nanofluid. Processes 2021, 9, 1253. https://0-doi-org.brum.beds.ac.uk/10.3390/pr9071253

AMA Style

Khetib Y, Alahmadi A, Alzaed A, Tahmasebi A, Sharifpur M, Cheraghian G. Effects of Different Wall Shapes on Thermal-Hydraulic Characteristics of Different Channels Filled with Water Based Graphite-SiO2 Hybrid Nanofluid. Processes. 2021; 9(7):1253. https://0-doi-org.brum.beds.ac.uk/10.3390/pr9071253

Chicago/Turabian Style

Khetib, Yacine, Ahmad Alahmadi, Ali Alzaed, Ahamd Tahmasebi, Mohsen Sharifpur, and Goshtasp Cheraghian. 2021. "Effects of Different Wall Shapes on Thermal-Hydraulic Characteristics of Different Channels Filled with Water Based Graphite-SiO2 Hybrid Nanofluid" Processes 9, no. 7: 1253. https://0-doi-org.brum.beds.ac.uk/10.3390/pr9071253

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