Performance Characteristics of an MHD Power Generator with Seeding Plane and Staggered Electrodes

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This paper deals with a theoretical investigation on the influences of the seeding position and the electrode staggering on the electrical performance characteristics of a Faraday-type MHD power generator. The analysis was made by means of conformal mapping techniques. The results revealed the following:<BR>(1) The influences in question can be expressed by a parameter determined uniquely by the generator geometry.<BR>(2) The internal resistance of the generator is independent of the direction of the electrode staggering.<BR>(3) There exists a value of stagger at which the internal resistance is minimized for a finite seeding aspect ratio.<BR>(4) The electric current concentration on the electrode edge can be attenuated by suitably staggering the electrode.<BR>(5) Generators with a single electrode pair and those with segmented electrodes have quite similar current density profile on the electrode surfaces, but rather different distribution on the generator center line.

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