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Effects of fluid flow on the performance of a subsonic nonequilibrium disk MHD generator
Author(s) -
Nabara Yoshihiro,
Kobayashi Hiromichi,
Okuno Yoshihiro,
Kabashima Shigeharu
Publication year - 2000
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/1520-6416(20001130)133:3<18::aid-eej3>3.0.co;2-j
Subject(s) - magnetohydrodynamic generator , boundary layer , supersonic speed , mechanics , generator (circuit theory) , non equilibrium thermodynamics , flow (mathematics) , magnetohydrodynamics , physics , plasma , thermodynamics , power (physics) , quantum mechanics
The fluid flow and performance of a nonequilibrium disk MHD generator with subsonic flow are examined by time‐dependent two‐dimensional r – z numerical simulations. It is found that the development of the boundary layer is enhanced with increasing load resistance, as is the case in supersonic generators. The development of the boundary layer affects not only the performance of the generator but the thermal input to it, in contrast to supersonic generators. These facts lead to considerable departures from the performance predicted by a quasi‐one‐dimensional simulation and suggest that two‐dimensional design of the generator channel, taking account of boundary layer development, is necessary in order to assure high performance of a subsonic generator. © 2000 Scripta Technica, Electr Eng Jpn, 133(3): 18–25, 2000