LINEAR THEORY OF AN MHD OSCILLATOR,
Abstract
The linear theory of AC fluctuations in an MHD channel subject to the Hall instability of Velikhov ('Hall instability of current-carrying slightly-ionized plasmas'. Symp. MPD. Elec. Power Gen., Newcastle-upon-Tyne, 1962) is explored. It is shown that the system as a whole (plasma, plus boundaries, plus external circuitry) is stable to the Velikhov mode except at certain resonant acoustic frequencies. If these resonant frequencies are excited, channels of sufficient size can be made to oscillate and produce net AC power. However, non-linear effects limit the AC power level severely for this geometry, and adversely affect the DC performance of the channel. The analysis shows that resonant fluctuations can be controlled by external circuitry. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1964
- Accession Number
- AD0609165
Entities
People
- James E. Mccune