Mathematical model of mixed convection boundary layer flow over a horizontal circular

This paper delves into the problem of mixed convection boundary layer flow from a horizontal circular cylinder filled in a Jeffrey fluid with viscous dissipation effect. Both cases of cooled and heated cylinders are discussed. The governing equations which have been converted into a dimensionless fo...

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Main Authors:	Syazwani, Mohd Zokri, Nur Syamilah, Arifin, Muhammad Khairul Anuar, Mohamed, Abdul Rahman, Mohd Kasim, Nurul Farahain, Mohammad, Mohd Zuki, Salleh
Format:	Article
Language:	English
Published:	Universiti Kebangsaan Malaysia 2018
Subjects:	Q Science (General)
Online Access:	http://umpir.ump.edu.my/id/eprint/22923/ http://umpir.ump.edu.my/id/eprint/22923/ http://umpir.ump.edu.my/id/eprint/22923/ http://umpir.ump.edu.my/id/eprint/22923/1/Mathematical%20model%20of%20mixed%20convection%20boundary%20layer%20flow%20over%20a%20horizontal%20circular%20.pdf

id	ump-22923
recordtype	eprints
spelling	ump-229232019-01-18T08:35:21Z http://umpir.ump.edu.my/id/eprint/22923/ Mathematical model of mixed convection boundary layer flow over a horizontal circular Syazwani, Mohd Zokri Nur Syamilah, Arifin Muhammad Khairul Anuar, Mohamed Abdul Rahman, Mohd Kasim Nurul Farahain, Mohammad Mohd Zuki, Salleh Q Science (General) This paper delves into the problem of mixed convection boundary layer flow from a horizontal circular cylinder filled in a Jeffrey fluid with viscous dissipation effect. Both cases of cooled and heated cylinders are discussed. The governing equations which have been converted into a dimensionless form using the appropriate non-dimensional variables are solved numerically through the Keller-box method. A comparative study is performed and authentication of the present results with documented outcomes from formerly published works is excellently achieved. Tabular and graphical representations of the numerical results are executed for the specified distributions, considering the mixed convection parameter, Jeffrey fluid parameters and the Prandtl and Eckert numbers. Interestingly, boundary layer separation for mixed convection parameter happens for some positive (assisting flow) and negative (opposing flow) values. Strong assisting flow means the cylinder is heated, which causes the delay in boundary layer separation, whereas strong opposing flow means the cylinder is cooled, which conveys the separation point close to the lower stagnation point. Contradictory behaviours of both Jeffrey fluid parameters are observed over the velocity and temperature profiles together with the skin friction coefficient and Nusselt number. The increase of the Prandtl number leads to the decrement of the temperature profile, while the increase of the Eckert number results in the slight increment of the skin friction coefficient and decrement of the Nusselt number. Both velocity and temperature profiles of Eckert number show no effects at the lower stagnation point of the cylinder. Universiti Kebangsaan Malaysia 2018-07 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/22923/1/Mathematical%20model%20of%20mixed%20convection%20boundary%20layer%20flow%20over%20a%20horizontal%20circular%20.pdf Syazwani, Mohd Zokri and Nur Syamilah, Arifin and Muhammad Khairul Anuar, Mohamed and Abdul Rahman, Mohd Kasim and Nurul Farahain, Mohammad and Mohd Zuki, Salleh (2018) Mathematical model of mixed convection boundary layer flow over a horizontal circular. Sains Malaysiana, 47 (7). pp. 1607-1615. ISSN 0126-6039 http://www.ukm.my/jsm/pdf_files/SM-PDF-47-7-2018/32%20Syazwani%20Mohd%20Zokri.pdf https://doi.org/10.17576/jsm-2018-4707-32
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	Q Science (General)
spellingShingle	Q Science (General) Syazwani, Mohd Zokri Nur Syamilah, Arifin Muhammad Khairul Anuar, Mohamed Abdul Rahman, Mohd Kasim Nurul Farahain, Mohammad Mohd Zuki, Salleh Mathematical model of mixed convection boundary layer flow over a horizontal circular
description	This paper delves into the problem of mixed convection boundary layer flow from a horizontal circular cylinder filled in a Jeffrey fluid with viscous dissipation effect. Both cases of cooled and heated cylinders are discussed. The governing equations which have been converted into a dimensionless form using the appropriate non-dimensional variables are solved numerically through the Keller-box method. A comparative study is performed and authentication of the present results with documented outcomes from formerly published works is excellently achieved. Tabular and graphical representations of the numerical results are executed for the specified distributions, considering the mixed convection parameter, Jeffrey fluid parameters and the Prandtl and Eckert numbers. Interestingly, boundary layer separation for mixed convection parameter happens for some positive (assisting flow) and negative (opposing flow) values. Strong assisting flow means the cylinder is heated, which causes the delay in boundary layer separation, whereas strong opposing flow means the cylinder is cooled, which conveys the separation point close to the lower stagnation point. Contradictory behaviours of both Jeffrey fluid parameters are observed over the velocity and temperature profiles together with the skin friction coefficient and Nusselt number. The increase of the Prandtl number leads to the decrement of the temperature profile, while the increase of the Eckert number results in the slight increment of the skin friction coefficient and decrement of the Nusselt number. Both velocity and temperature profiles of Eckert number show no effects at the lower stagnation point of the cylinder.
format	Article
author	Syazwani, Mohd Zokri Nur Syamilah, Arifin Muhammad Khairul Anuar, Mohamed Abdul Rahman, Mohd Kasim Nurul Farahain, Mohammad Mohd Zuki, Salleh
author_facet	Syazwani, Mohd Zokri Nur Syamilah, Arifin Muhammad Khairul Anuar, Mohamed Abdul Rahman, Mohd Kasim Nurul Farahain, Mohammad Mohd Zuki, Salleh
author_sort	Syazwani, Mohd Zokri
title	Mathematical model of mixed convection boundary layer flow over a horizontal circular
title_short	Mathematical model of mixed convection boundary layer flow over a horizontal circular
title_full	Mathematical model of mixed convection boundary layer flow over a horizontal circular
title_fullStr	Mathematical model of mixed convection boundary layer flow over a horizontal circular
title_full_unstemmed	Mathematical model of mixed convection boundary layer flow over a horizontal circular
title_sort	mathematical model of mixed convection boundary layer flow over a horizontal circular
publisher	Universiti Kebangsaan Malaysia
publishDate	2018
url	http://umpir.ump.edu.my/id/eprint/22923/ http://umpir.ump.edu.my/id/eprint/22923/ http://umpir.ump.edu.my/id/eprint/22923/ http://umpir.ump.edu.my/id/eprint/22923/1/Mathematical%20model%20of%20mixed%20convection%20boundary%20layer%20flow%20over%20a%20horizontal%20circular%20.pdf
first_indexed	2023-09-18T22:34:06Z
last_indexed	2023-09-18T22:34:06Z
_version_	1777416480204259328

Mathematical model of mixed convection boundary layer flow over a horizontal circular

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