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- W121997267 abstract "The purpose of the present study is to optimize the gaseous electrode for use in an MHD generator and to test this optimum configuration in an operating MHD channel. The arc gaseous electrode concept is based on the use of an arc source in the body of the MHD channel electrode, wherein the arc follows a helical path and generates a plasma which flows out of a long, thin slot cut parallel to the cylindrical annulus, to provide a low impedance path for the MHD current through the boundary layer so that electrode erosion due to arcing can be reduced. Bench-scale tests on the arc plasma source were conducted. The effect of the parameters such as magnetic field, yaw angle with respect to the magnetic field, electrode geometry, and arc cathode materials were studied. Based on these studies, an optimum design was selected for testing in the MHD channel. Tests were conducted with the arc gaseous electrode in the cathode wall of a diagonal conducting wall MHD generator at magnetic fields up to 3.83 Tesla, with a supersonic flow of combustion products seeded with 1.0 w/o of potassium. The measured MHD plasma conductivity varied between 12 and 22 S/m. Resultsmore » are presented and discussed in detail. (WHK)« less" @default.
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- W121997267 date "1979-12-01" @default.
- W121997267 modified "2023-09-27" @default.
- W121997267 title "Gaseous electrode development. Final report" @default.
- W121997267 doi "https://doi.org/10.2172/5301005" @default.
- W121997267 hasPublicationYear "1979" @default.
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