Richtmyer-Meshkov Instability at a continuous interface

Conference · Mon Jul 30 04:00:00 EDT 1990 · AIP Conference Proceedings (American Institute of Physics); (United States)

OSTI ID:7302445

Brouillette, M; Sturtevant, B ^[1]

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1. Graduate Aeronautical Laboratories, California Institute of Technology, Pasadena, California 91125 (United States)

The response of a thick, sinusoidally distorted interface between two gases of different density to impulsive acceleration by a sequence of shock waves propagating normal to the plane of the undistorted interface has been studied experimentally and theoretically. A simple analytical model is proposed for the effect of the finite thickness on the linear growth of the disturbances while the amplitude is small. Experiments in a vertical shock tube show that the growth of distortions intially of order 0.1 mm on 1.8 cm thick light-heavy interfaces induced by weak (1.12{lt}{ital M}{sub {ital s}}{lt}1.66) shock waves is not measurable, but growth after the first and second reshocks is. The measured growth rates are presented and the initial distortions are inferred from the theory. Several effects of the wall boundary layers are described.

• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 7302445
• Report Number(s): CONF-890756--
• Conference Information: Journal Name: AIP Conference Proceedings (American Institute of Physics); (United States) Journal Volume: 208:1
• Country of Publication: United States
• Language: English

Related Subjects

661300* -- Other Aspects of Physical Science-- (1992-)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BOUNDARY LAYERS
INSTABILITY
INSTABILITY GROWTH RATES
INTERFACES
LAYERS
MACH NUMBER
PHOTOGRAPHY
RAYLEIGH-TAYLOR INSTABILITY
SCHLIEREN METHOD
SHOCK TUBES
SHOCK WAVES
VELOCITY
WALL EFFECTS