Stability of nonuniform subsonic flow in a high-power MHD generator against quasi-one-dimensional acoustic oscillations

Journal Article · Sat Mar 01 00:00:00 EST 1986 · High Temp. (Engl. Transl.); (United States)

OSTI ID:7175567

Rutkevich, I M

An analytical method is proposed for investigating the stability of a longitudinally uniform subsonic magnetohydrodynamic flow against high-frequency quasi-one-dimensional acoustic perturbations. The method permits not only the nonuniformity of the main flow to be taken into account, but also the electrodynamic boundary conditions at the walls of the MHD channel, the dissipative processes in the turbulent boundary layers, and the influence of these factors on the stability. The results are given from calculations of the acoustic spectrum for the flow in the gasdynamic line, including the nozzle, the MHD generator with loop channel, and the diffuser. The investigation shows that the steady gradients created as a result of the profiling of the line and the action of external forces are the principle factors governing the stability of subsonic flow against natural acoustic oscillations for a high-power open-cycle MHD generator.

• Research Organization: Institute of High Temperatures, Academy of Sciences of the USSR
• OSTI ID: 7175567
• Journal Information: High Temp. (Engl. Transl.); (United States), Vol. 24:2
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
MHD GENERATORS
SUBSONIC FLOW
ACOUSTICS
BOUNDARY CONDITIONS
BOUNDARY LAYERS
ELECTRODYNAMICS
MAGNETOHYDRODYNAMICS
MHD CHANNELS
OSCILLATIONS
STABILITY
TURBULENCE
DIRECT ENERGY CONVERTERS
FLUID FLOW
FLUID MECHANICS
HYDRODYNAMICS
LAYERS
MECHANICS
300104* - MHD Generators- Duct Engineering & Fluid Dynamics