Numerical calculations of complex Mach reflectionNumerical simulations of the interaction of a planar blast wave with a compression ramp are presented. The split coefficient matrix (SCM) method in conjunction with boundary shock and floating discontinuity-fitting procedures was employed to obtain the time-asymptotic solutions of the two-dimensional, unsteady Euler equations. The solutions were computed for the complex Mach reflection (CMR) regime of the shock diffraction problem in an attempt to explore the basic physical process governing the evolution of an incipient second Mach stem and the associated topological changes. Numerical results were obtained for shock diffraction over a 40 degree ramp with varying incident shock Mach numbers. The validity of the present approach has been substantiated by experimental observations and earlier numerical calculations.
Document ID
19840056527
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Yamamoto, O. (Iowa State Univ. of Science and Technology Ames, IA, United States)
Anderson, D. A. (Iowa State University of Science and Technology, Ames, IA, United States)
Salas, M. D. (NASA Langley Research Center Theoretical Aerodynamics Branch, Hampton, VA, United States)