Accession Number : AD0698776

Title :   LAMINAR SEPARATION IN HYPERSONIC FLOWS.

Descriptive Note : Final scientific rept. 1 Oct 68-31 Oct 69,

Corporate Author : VON KARMAN INST FOR FLUID DYNAMICS RHODE-SAINT-GENESE (BELGIUM)

Personal Author(s) : Ginoux,Jean J.

Report Date : 31 OCT 1969

Pagination or Media Count : 72

Abstract : Emphasis is given on a fundamental phenomenon developing in reattaching high speed flows, namely, spatially periodic patterns of counter-rotating streamwise vortices. Detailed surveys made with pitot-static tubes, hot wireprobes, recovery temperature and heat transfer gages are presented. The effect of streamwise vortices on transition was studied using axisymmetric models on which the strength of vortices could be artificially controlled. For this purpose, a new criterion for transition detection was used. The effect of air and foreign gas injection in separated flow was studied and its application to suppressing local heat transfer peaks examined. (Author)

Descriptors :   (*FLOW SEPARATION, HYPERSONIC CHARACTERISTICS), (*VORTICES, *BOUNDARY LAYER TRANSITION), LAMINAR FLOW, MODEL TESTS, AIR, GASES, INJECTION, HEAT TRANSFER, LEADING EDGES, BELGIUM, REVIEWS

Subject Categories : Aerodynamics
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE