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Please use this identifier to cite or link to this item: http://hdl.handle.net/11154/2145

Title: Entropy generation analysis of magnetohydrodynamic induction devices
Authors: Salas, H
Cuevas, S
de Haro, ML
Issue Date: 1999
Abstract: Magnetohydrodynamic (MHD) induction devices such as electromagnetic pumps or electric generators are analysed within the approach of entropy generation. The flow of an electrically-conducting incompressible fluid in an MHD induction machine is described through the well known Hartmann model. Irreversibilities in the system due to ohmic dissipation, how friction and heat flow are included in the entropy-generation rate. This quantity is used to define an overall efficiency for the induction machine that considers the total loss caused by process irreversibility. For an MHD generator working at maximum power output with walls at constant temperature, an optimum magnetic field strength (i.e. Hartmann number) is found based on the maximum overall efficiency.
URI: http://hdl.handle.net/11154/2145
ISSN: 0022-3727
Appears in Collections:Ciencias

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