Heating a cold semi-annulus wall by MHD natural convetion with nanofluid

Cao, Yan and Ayed, Hamdi and Togun, Hussein and Shawabkeh, Ali and Dahari, Mahidzal and Wae-hayee, Makatar and Mouldi, Abir and Marzouki, Riadh (2021) Heating a cold semi-annulus wall by MHD natural convetion with nanofluid. Case Studies in Thermal Engineering, 28. ISSN 2214-157X, DOI https://doi.org/10.1016/j.csite.2021.101569.

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In the current research, the natural convection of water-Al2O3 nanofluid has been simulated inside a cold semi-annulus chamber with a hot block at the its bottom. Also, an oblique magnetic field (MHD) has been implemented to improve and control the flow. The unstructured triangular mesh and FVM with SIMPLE algorithm have been employed for discretization and coupling of pressure and velocity equations. In this simulation, the parameters of Hartmann, Rayleigh numbers and volume fraction of nanoparticles have been investigated on temperature contours, flow pattern, and hot wall Nusselt number. The observations show that, increasing the volume fraction increases the Nusselt number at low Rayleigh numbers. Moreover, the Nusselt number is inversely related to the Hartmann number for high Rayleigh numbers.

Item Type: Article
Funders: Deanship of Scientific Research at King Khalid University [Grant No: RGP.1/260/42], Universiti Malaya [Grant No: GPF054A-2020]
Uncontrolled Keywords: Natural convection; MHD; Cold semi-annulus; Hot block; CFD
Subjects: T Technology > T Technology (General)
T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Engineering > Department of Electrical Engineering
Depositing User: Ms Zaharah Ramly
Date Deposited: 29 Jun 2022 07:59
Last Modified: 29 Jun 2022 07:59
URI: http://eprints.um.edu.my/id/eprint/33978

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