Magnetoconvection of nanofluid in a partially heated cavity with isothermal blockage

• Autorzy: Nagaraj Suresh , Nagarajan Nithyadevi

Identyfikatory

DOI

10.17512/jamcm.2022.2.07

• Języki publikacji: EN

Abstrakty

EN

Natural convection characteristics of Al₂O₃-water nanofluid in a cavity is investigated numerically under the influence of a inclined magnetic field. The bottom wall is partially heated, and the top wall is cooled and the remaining regions of the cavity are kept adiabatic. An isothermally heated square blockage of the different rectangular size is placed at the centre of the cavity. The schematic model is converted into mathematical form, and the non-dimensional equations are discretized by the finite volume method using power law scheme and solved by Semi-Implicit Method for Pressure Linked Equation algorithm. The relevant parameters such as Rayleigh number (10⁴-10⁶), Hartmann numer (10-500), size of blockage ratio (0.25-0.75), length of the heat source (0.25-1.0) and inclination angle of the magnetic field (0°-90° on the flow and temperature fields are examined. Results are presented in terms of streamlines, isotherms, velocity profile, local and average Nusselt number. It was found that for low Hartmann numbers, the average heat transfer rate attained the maximum at the inclined magnetic field of γ = 45°. In addition, the blockage ratio of B = 0.75 enhanced the higher heat transfer rate for all values of γ.

Słowa kluczowe

EN

Al2O3 nanofluid; finite volume method; inclined magnetic field; isothermal square body; natural convection; partial bottom heating

PL

nanopłyn Al2O3; metoda objętości skończonych; nachylone pole magnetyczne; konwekcja naturalna

• Wydawca: Wydawnictwo Politechniki Częstochowskiej
• Czasopismo: Journal of Applied Mathematics and Computational Mechanics
• Rocznik: 2022
• Tom: Vol. 21, nr 2
• Strony: 77--90
• Opis fizyczny: Bibliogr. 26 poz., rys.

Twórcy

autor

Nagaraj Suresh

• Department of Mathematics, Bharathiar University Coimbatore, India

autor

Nagarajan Nithyadevi

• Department of Applied Mathematics, Bharathiar University Coimbatore, India

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).