Accession Number : ADA018347

Title :   On Transonic Shoc Wave - Boundary Layer Interaction Flow Patterns,

Corporate Author : VIRGINIA POLYTECHNIC INST AND STATE UNIV BLACKSBURG DEPT OF AEROSPACE AND OCEAN ENGINEERING

Personal Author(s) : Inger,George R.

Report Date : AUG 1974

Pagination or Media Count : 29

Abstract : A review is made of the existing knowledge about the interaction of impinging shock waves with laminar or turbulent boundary layers, to emphasize and illustrate that the relative degree of inviscid-dominated (solid wall-like) reflection behavior versus viscous-dominated (free surface-like) reflection is a major feature determining the disturbance flow pattern. This idea is then used to appraise existing transonic normal shock-boundary layer interaction experiments and establish an ordered relationship between them. As a result, it is shown that far from being unusual, a post-shock pocket of supersonic flow ('supersonic tongue') is in fact a common feature of all such interaction patterns, although its scale can change drastically with incident shock strength, Reynolds number and downstream conditions. (Author)

Descriptors :   *TRANSONIC FLOW, *SHOCK WAVES, *BOUNDARY LAYER TRANSITION, *SUPERSONIC FLOW, FLOW FIELDS, INTERACTIONS, LAMINAR BOUNDARY LAYER, TURBULENT BOUNDARY LAYER, IMPINGEMENT, MATHEMATICAL MODELS, EXPERIMENTAL DATA, INVISCID FLOW, FLOW SEPARATION, REYNOLDS NUMBER, REFLECTION, VISCOUS FLOW

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE