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Flow and heat transfer due to partially heated moving lid in a trapezoidal cavity with different constraints at inner circular obstacle

The main emphasis of the current work is to deal with the forced convection of magnetohydrodynamics (MHD) flow and its heat transfer due to force convection generated by a moving lid in a trapezoidal enclosure. Various cases of temperature at the surface of the circular obstacle inside the cavity ar...

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Main Authors: Noor, N. F. M., Ul Haq, Rizwan, Wong, H. F., Alzahrani, A. Khamis, Ullah, M. Zaka
Format: Article
Published: Elsevier 2022
Subjects:
TJ Mechanical engineering and machinery
Online Access:http://eprints.um.edu.my/42183/
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spelling my.um.eprints.421832023-10-16T02:03:57Z http://eprints.um.edu.my/42183/ Flow and heat transfer due to partially heated moving lid in a trapezoidal cavity with different constraints at inner circular obstacle Noor, N. F. M. Ul Haq, Rizwan Wong, H. F. Alzahrani, A. Khamis Ullah, M. Zaka TJ Mechanical engineering and machinery The main emphasis of the current work is to deal with the forced convection of magnetohydrodynamics (MHD) flow and its heat transfer due to force convection generated by a moving lid in a trapezoidal enclosure. Various cases of temperature at the surface of the circular obstacle inside the cavity are determined. The trapezoidal cavity has a moveable and partially heated top lid while the bottom wall is kept at a low temperature. The linearly inclined walls on the left and right sides of the cavity are both adiabatic. The finite element method is applied for computations validated with existing work. Numerical simulations are conducted to analyze this trapezoidal cavity model for various thermal conditions of the inner circular obstacle, various heated lengths (0 < LH < 1), various Reynolds number (100 < Re < 700), Richardson number (0.001 < Ri < 10) and Hartmann number (0 < Ha < 100). The entire analysis describes that high Reynolds numbers improve the thermal performance of liquid. However, moving lid generates fluid molecules specifically directed according to wall movement. The force convection phenomenon becomes more dominant as the Reynolds number and heated length increase. A cold circular obstacle resists the circulation of heat in the cavity whereas the local Nusselt number drops when the simultaneous effects of the moving lid force and heated sources move away from the surface. Elsevier 2022-06 Article PeerReviewed Noor, N. F. M. and Ul Haq, Rizwan and Wong, H. F. and Alzahrani, A. Khamis and Ullah, M. Zaka (2022) Flow and heat transfer due to partially heated moving lid in a trapezoidal cavity with different constraints at inner circular obstacle. International Communications in Heat and Mass Transfer, 135. ISSN 0735-1933, DOI https://doi.org/10.1016/j.icheatmasstransfer.2022.106111 <https://doi.org/10.1016/j.icheatmasstransfer.2022.106111>. 10.1016/j.icheatmasstransfer.2022.106111
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic TJ Mechanical engineering and machinery
spellingShingle TJ Mechanical engineering and machinery
Noor, N. F. M.
Ul Haq, Rizwan
Wong, H. F.
Alzahrani, A. Khamis
Ullah, M. Zaka
Flow and heat transfer due to partially heated moving lid in a trapezoidal cavity with different constraints at inner circular obstacle
description The main emphasis of the current work is to deal with the forced convection of magnetohydrodynamics (MHD) flow and its heat transfer due to force convection generated by a moving lid in a trapezoidal enclosure. Various cases of temperature at the surface of the circular obstacle inside the cavity are determined. The trapezoidal cavity has a moveable and partially heated top lid while the bottom wall is kept at a low temperature. The linearly inclined walls on the left and right sides of the cavity are both adiabatic. The finite element method is applied for computations validated with existing work. Numerical simulations are conducted to analyze this trapezoidal cavity model for various thermal conditions of the inner circular obstacle, various heated lengths (0 < LH < 1), various Reynolds number (100 < Re < 700), Richardson number (0.001 < Ri < 10) and Hartmann number (0 < Ha < 100). The entire analysis describes that high Reynolds numbers improve the thermal performance of liquid. However, moving lid generates fluid molecules specifically directed according to wall movement. The force convection phenomenon becomes more dominant as the Reynolds number and heated length increase. A cold circular obstacle resists the circulation of heat in the cavity whereas the local Nusselt number drops when the simultaneous effects of the moving lid force and heated sources move away from the surface.
format Article
author Noor, N. F. M.
Ul Haq, Rizwan
Wong, H. F.
Alzahrani, A. Khamis
Ullah, M. Zaka
author_facet Noor, N. F. M.
Ul Haq, Rizwan
Wong, H. F.
Alzahrani, A. Khamis
Ullah, M. Zaka
author_sort Noor, N. F. M.
title Flow and heat transfer due to partially heated moving lid in a trapezoidal cavity with different constraints at inner circular obstacle
title_short Flow and heat transfer due to partially heated moving lid in a trapezoidal cavity with different constraints at inner circular obstacle
title_full Flow and heat transfer due to partially heated moving lid in a trapezoidal cavity with different constraints at inner circular obstacle
title_fullStr Flow and heat transfer due to partially heated moving lid in a trapezoidal cavity with different constraints at inner circular obstacle
title_full_unstemmed Flow and heat transfer due to partially heated moving lid in a trapezoidal cavity with different constraints at inner circular obstacle
title_sort flow and heat transfer due to partially heated moving lid in a trapezoidal cavity with different constraints at inner circular obstacle
publisher Elsevier
publishDate 2022
url http://eprints.um.edu.my/42183/
_version_ 1781704606384914432
score 13.211869

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