Accession Number : ADA020081

Title :   A Computer Analysis for the Determination of Electrode Voltage Losses in Magnetohydrodynamic-Generator Plasmas.

Descriptive Note : Doctoral thesis,


Personal Author(s) : Dolson,Richard Charles

Report Date : DEC 1975

Pagination or Media Count : 149

Abstract : This work investigates the nature and extent of the voltage drops in the vicinity of MHD non-emitting electrodes, especially the losses attributable to the sheath. The non-existence of a one-dimensional sheath solution is proved and a computer model with two-dimensional, periodic active sites representing a flat plate electrode is developed. The sheath and ambipolar regions evolve from the same set of equations in a self-consistent way, obviating the requirement to match boundary conditions between the regions. With this model the effects of a magnetic field and Joule heating are studied. Results are compared with experimental observations. To supplement the sheath investigation a peripheral study of the boundary layer voltage losses has been made and a relatively simple technique for determining these losses is presented.

Descriptors :   *Magnetohydrodynamic generators, *Plasma sheaths, *Voltage, Losses, Electrodes, Partial differential equations, Mathematical models, Computerized simulation, Computer programs, Theses

Subject Categories : Electric Power Production and Distribution
      Plasma Physics and Magnetohydrodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE