Gas-ionizing shock and combustion waves in magnetogasdynamics

Journal Article · Thu Nov 01 04:00:00 EST 1962 · Journal of Fluid Mechanics

DOI:https://doi.org/10.1017/S0022112062001329· OSTI ID:4760091

Helliwell, J. B.

Some general properties of one-dimensional deflagration waves in a non- conducting inviscid gas at rest are discussed. Ionization of the gas is assumed to take place across a shock wave that precedes the flame front, and electromagnetic fields are allowed, The direction of wave propagation, electric field, and magnetic field are taken as a mutually orthogonal triad of vectors. The jump relationships across the gas-ionizing shock wave and magnetogasdynamic combustion wave are investigated and the two Hugoniot curves analyzed in detail in the pressure-specific volume plane. The possible types of wave are indicated for arbitrary magnitudes of the upstream electromagnetic field. It is shown that weak gas-ionizing shock waves cannot exist. For suitably chosen electromagnetic field strengths the density ratio across the shock wave may be greater than the ordinary gasdynamic limit and, in such cases, the pressure and density ratios are related in an inverse manner, in contrast to the behavior for ordinary gasdynamic or magnetogasdynamic shock waves. The magnetogasdynamic combustion wave has properties similar to those in ordinary gasdynamics.

• Research Organization: Royal Coll. of Science and Tech., Glasgow
• Sponsoring Organization: USDOE
• NSA Number: NSA-17-004193
• OSTI ID: 4760091
• Journal Information: Journal of Fluid Mechanics, Journal Name: Journal of Fluid Mechanics Journal Issue: 03 Vol. 14; ISSN applab; ISSN 0022-1120
• Publisher: Cambridge University Press
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AERODYNAMICS
COMBUSTION
DENSITY
DIAGRAMS
ELECTRIC CONDUCTIVITY
ELECTRIC FIELDS
ELECTROMAGNETIC FIELDS
EQUATIONS
GASES
HUGONIOT EQUATION
IONIZATION
MAGNETIC FIELDS
MAGNETOHYDRODYNAMICS
MOTION
PRESSURE
SHOCK WAVES
VECTORS
VISCOSITY
VOLUME