NDLI: Boundary feedback control for heat exchange enhancement in 2D magnetohydrodynamic channel flow by extremum seeking

Content Provider	IEEE Xplore Digital Library
Author	Lixiang Luo Schuster, E.
Copyright Year	2009
Description	Author affiliation: Department of Mechanical Engineering and Mechanics, Lehigh University, Bethlehem, PA 18015, USA (Lixiang Luo; Schuster, E.)
Abstract	The heat exchange efficiency of electrically conducting fluids can drop dramatically when they interact with externally imposed magnetic fields. The movement of such fluids under the presence of imposed transverse magnetic fields can generate substantial magnetohydrodynamics (MHD) effects including the need of higher pressure gradients to drive the fluids and lower heat transfer rates due to the laminarization of the flows. Active boundary control can be employed to overcome this disadvantage. We consider in this work a heat exchange process in a 2D MHD channel flow. An extremumseeking scheme is proposed to tune in real time a fixed-structure boundary controller with the ultimate goal of maximizing the outlet temperature of the electrically conducting cooling fluid, and therefore enhancing the efficiency of the heat exchanger. A heat transfer solver based on finite difference techniques is developed to predict the temperature dynamics within the 2D MHD channel, where the velocity dynamics is predicted by a pseudo-spectral solver. Simulation results show the efficiency of the proposed controller.
Starting Page	8272
Ending Page	8277
File Size	1673633
Page Count	6
File Format	PDF
ISBN	9781424438716
ISSN	01912216
DOI	10.1109/CDC.2009.5399539
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-12-15
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Feedback control Magnetohydrodynamic power generation Magnetic liquids Resistance heating Heat transfer Fluid flow control Fluid dynamics Magnetic fields Temperature control Cooling
Content Type	Text
Resource Type	Article

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