ADVANCED PENETRATION PROBLEMS. MEAN FLOW MEASUREMENTS IN A SELF-PRESERVING TURBULENT PLASMA JET.
Abstract
A turbulent argon plasma jet has been generated and its mean (average) flow has been diagnosed with standard instrumentation. Measurements of the temperature, density, axial velocity and electron density show that the overall gasdynamical jet structure attains the so-called self-preserving state within the region investigated. In the radial direction a similarity coordinate based on the Howarth-Dorodnitzyn radius correlates the distributions of temperature and axial velocity, and it is shown that the same coordinate should also correlate the relative concentration of electrons though not the absolute electron density. The measurements show that the electron relative concentration does not in fact become similar, and it is conjectured that the axial decay of electron density must be controlled by recombination reactions. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1968
- Accession Number
- AD0831760
Entities
People
- Anthony Demetriades
- E. L. Doughman