Abstract
A theoretical study is made of parallel-plate slider bearing with a nonuniform magnetic field parallel to the plates and perpendicular to the direction of flow. By using the calculus of variations, the magnetic field profile for the maximum load capacity of the bearing is determined. The optimum magnetic field profile is a step function with the step location and step height ratio depending on the maximum field strength and the electric potential difference between the plates. For this magnetic filed profile, the load capacity of the bearing increases and the friction factor decreases as the maximum Hartmann number increases. Numerical values of the step location, load capacity, friction force, flow rate and electric current are provided for the case of short circuit.
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