ON SHOCK TUBE SIDE WALL LANGMUIR PROBES,
Abstract
Analytical forms for the local electrical characteristics and resistance associated with shock tube side wall electrodes are obtained as functions of distance behind the ionizing shock wave for large electrical Reynolds numbers. The continuum theory of Lam for the flow of weakly ionized gases over biased arbitrary bodies with absorbing surfaces is applied. The contributions to the potential drop across electrodes are form: (1) the outer region, accounting for the electrode geometry and its relative location to the current-insulating shock wave, obtained from Laplace's equation, (2) the ambipolar region, obtained from the ambipolar convective-diffusion equation, and (3) the sheath region, in terms of a universal function. The operating characteristics of the electrode system with an external circuit, as in a typical experimental setup, is discussed in detail. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1966
- Accession Number
- AD0482424
Entities
People
- J. T. C. Liu
Organizations
- Princeton University