Numerical and experimental investigations of MHD processes of energy transforming in inhomogenious gas-plasma flows
- Krasnoyarsk State Technical Univ. (Russian Federation); and others
The results of experimental and theoretical research of MHD interaction processes of a plasma clot with carrying gas flow in Faraday MHD channel with continuous electrodes are represented. Two possible situations are being analysed: (1) working medium is air without seed, plasma clot is an equilibrium are stabilized with radiation (T-layer); (2) argon without seed, plasma exists in the form of a non-equilibrium are stabilized with electrons energy losses in elastic collisions with gas atoms. The experiment was being carried in a linear MHD channel started by a shock tube. Plasma clot was formed by an impulse electric discharge in a gasodynamic nozzle being placed between a throat and MHD channel. Self-supported current layer (T-layer) was being formed of a plasma clot under the influence of Lorentz force and Joule dissipation in the MHD channel. For compensation of near electrode voltage drop a charged battery of condensers was connected to the MHD channel electrodes instead of the load resistor. Plasma layer has steadily passed through the MHD channel {approximately}1.5 m length. In this case its parameters check well with the calculations performed on the basis of a piston model. Plasma clot initiation regime realized in this experiment was being simulated with the help of non-stationary quasi-one-dimensional design programm. Identity of the major calculation and experimental results has been shown. Dynamics of impulse strong current discharge has been studied; in so doing the role of gasodynamic expansion of a discharge zone and ionized air radiation in overall energy balance is determined.
- OSTI ID:
- 254650
- Report Number(s):
- CONF-950697-; CNN: Grant RKQ000; TRN: 96:015615
- Resource Relation:
- Conference: 33. symposium on engineering aspects of magnetohydrodynamics, Tullahoma, TN (United States), 13-15 Jun 1995; Other Information: PBD: 1995; Related Information: Is Part Of Proceedings of the SEAM 33rd symposium on engineering aspects of magnetohydrodynamics; PB: 500 p.
- Country of Publication:
- United States
- Language:
- English
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