Effects of fringing magnetic fields on MHD seawater thruster performance [electronic resource].
- Washington, D.C. : United States. Dept. of Defense, 1992.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- 8 pages : digital, PDF file
- Additional Creators:
- Argonne National Laboratory, United States. Department of Defense, and United States. Department of Energy. Office of Scientific and Technical Information
- Restrictions on Access:
- Free-to-read Unrestricted online access
- There are several loss mechanisms that influence the flow and electrical field characteristics of an MHD seawater thruster and hence its performance. Among those losses are the jet losses, ohmic losses, three-dimensional effects, and electrical end losses. Some of those loss mechanisms have been discussed before, together with the parameters affecting the thruster performance. Thruster electrical end losses are caused by the fringing of the magnetic field near the ends of the electrodes, and by the nonuniformity of the current and electric fields across the thruster, particularly near the ends of the electrodes. Therefore, the current density cannot be calculated from a simple one-dimensional relationship. Rather, a multi-dimensional solution of the electric fields should be performed. No simple expression can be written for the electrical end losses, because end effects depend on several parameters that include the thruster aspect ratio, load factor and the profile of the magnetic field in the fringe region away from the electrodes.
- Report Numbers:
- E 1.99:anl/cp--75073
E 1.99: conf-920747--3
- Other Subject(s):
- Published through SciTech Connect.
28. joint propulsion conference,Nashville, TN (United States),6-8 Jul 1992.
Geyer, H.K.; Doss, E.D.
- Funding Information:
View MARC record | catkey: 13600845