Flow of the Magnetorheological Fluid in Disc-Type Clutch

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Abstract:

Herschel-Bulkley model is used to describe the constitutive behavior of Magnetorheological (MR) fluids subject to an applied magnetic field. Based on the shear flow equation at the narrow gap, a theoretical analysis of the effect of the applied magnetic field on the viscoplastic flow between two parallel disks is presented. The expression for the velocity in viscoplastic flow is derived. The results indicate that the velocity profile of MR fluid in shear region is deeply dependent on the gradient of the pressure in the flow channel. For the negative pressure gradient value, the velocity peak value point tends to move toward the driven disc wall as absolute value of pressure gradient increases. However, the velocity peak value point tends to move toward the driving disc wall as absolute value of pressure gradient increases for the positive pressure gradient value.

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709-714

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August 2013

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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