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Nuclear Science and Engineering
Fusion Science and Technology
Advanced reactors: Now comes the hard part
Designing a reactor is complicated but building one may be harder. Even companies that have had lots of practice haven’t always done it well. And all the power reactors in service today were built by companies that had years of experience in other kinds of big steam-electric power plants. In contrast, some of the creative new designs now moving toward commercialization come from start-ups that have never built anything at all. How should they prepare?
K. Kubota, I. Funaki, Y. Okuno (19P02)
Fusion Science and Technology | Volume 51 | Number 2 | February 2007 | Pages 220-222
Technical Paper | Open Magnetic Systems for Plasma Confinement | dx.doi.org/10.13182/FST07-A1355
Articles are hosted by Taylor and Francis Online.
The influence of the Hall effect on the current distribution and the plasma flow was investigated using two-dimensional numerical simulation for a self-field MagnetoPlasmaDynamic (MPD) thruster consisting of a short cathode and a flared anode. When the Argon mass flow rate and the total discharge current were set to 0.8 g/s and 5 kA respectively, the result with the Hall effect showed that concentrations of current density on the root of the cathode and on the edge of the flared anode were found. Such a highly skewed current lines near the cathode are caused by large local Hall parameters, which also lead to a large potential drop near the cathode surface.