Alawi, Omer A. and Kamar, Haslinda Mohamed and Hussein, Omar A. and Mallah, A. R. and Mohammed, Hussein A. and Khiadani, Mehdi and Roomi, Ali B. and Kazi Md., Salim Newaz and Yaseen, Zaher Mundher (2022) Effects of binary hybrid nanofluid on heat transfer and fluid flow in a triangular-corrugated channel: An experimental and numerical study. Powder Technology, 395. pp. 267-279. ISSN 0032-5910, DOI https://doi.org/10.1016/j.powtec.2021.09.046.
Full text not available from this repository.Abstract
The flow and heat transfer over a modulated surface in the form of triangular protrusions using MWCNTs-TiO2 nanohybrids were investigated, and its results are detailed in this paper. The nanomaterials were functionalized and prepared at weight concentrations of 0.025%-wt., 0.05%-wt., 0.075%-wt., and 0.1%-wt., then had its morphology elucidated using the high-resolution transmission electron microscopy (HR-TEM), field emission transmission electron microscopy (FE-SEM), and Energy Dispersive X-Ray Analysis (EDX). The mixture's thermophysical properties at 303 K were determined and utilized in the investigation's numerical aspect. A steady-state 2D analysis of flow over a modulated surface was solved in ANSYS-FLUENT with turbulent flow at 5000 <= Re <= 15,000. The model was validated using the Dittus-Boelter Eq., and its average error was 9.840%. The heat transfer was enhanced by 13.181%, 18.056%, 22.033% and 26.107% for nanoparticles' weight concentrations of 0.025%-wt., 0.05%-wt., 0.075%-wt., and 0.1%-wt., respectively. The water flow and MWCNTs-TiO2 nanohybrids' turbulent kinetic energy, pressure, velocity, turbulence intensity contours, and velocity vectors were determined, and correlations were formed from the results to predict the average Nusselt number for the DW and MWCNTsTiO2 as a function of the nanoparticles' weight concentrations. (C) 2021 Elsevier B.V. All rights reserved.
| Item Type: | Article |
|---|---|
| Funders: | Universiti Teknologi Malaysia (UTM) [Grant No: 05E81], Research Management Centre (RMC) [Grant No: 05E81] |
| Uncontrolled Keywords: | Hybrid nanofluids; MWCNT-TiO2H2O; Turbulent heat transfer; Protruded surface; Electron microscopy |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | Faculty of Engineering > Department of Mechanical Engineering |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 26 Apr 2022 04:30 |
| Last Modified: | 26 Apr 2022 04:30 |
| URI: | http://eprints.um.edu.my/id/eprint/33751 |
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