Quasi-two-dimensional MHD duct flow around a 180-degree sharp bend in a strong magnetic field

Mohammed Sapardi, Mohd Azan and Hussam, Wisam K. and Potherat, Alban and Sheard, Gregory J. (2014) Quasi-two-dimensional MHD duct flow around a 180-degree sharp bend in a strong magnetic field. In: 19th Australasian Fluid Mechanics Conference 2014, 8th-11th Dec. 2014, Melbourne, Australia.

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Abstract

This study considers the quasi-two-dimensional flow of an electrically conducting fluid subjected to a strong out-of-plane magnetic field in a rectangular duct. The effect of Hartmann number on flow features such as the length of the downstream recirculation bubbles and the threshold Reynolds numbers between steady-state and unsteady flow regimes for values of the ratio between the throat of the bend and the duct height, β = 1 are identified. The simulations reveal that the primary recirculation bubble length decreases with increasing Hartmann number, and simultaneously the secondary recirculation bubble is significantly damped compared to the corresponding non-MHD case. The critical Reynolds number where the transitions from steady to unsteady flow occurs was found to increase with increasing of Hartman number. This study provides information that will be useful for refining the design of heat exchanger ducting in MHD systems to maximise the useful mass transport adjacent to the duct walls where heating is applied.

Item Type:	Conference or Workshop Item (Invited Papers)
Additional Information:	8410/71548
Uncontrolled Keywords:	Quasi-Two-Dimensional MHD Duct Flow, strong magnetic field
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA349 Mechanics of engineering. Applied mechanics
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering Kulliyyah of Engineering > Department of Mechanical Engineering
Depositing User:	Dr Mohd Azan Mohammed Sapardi
Date Deposited:	10 Apr 2019 16:50
Last Modified:	25 Apr 2019 12:57
URI:	http://irep.iium.edu.my/id/eprint/71548

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