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ISSN Online: 2377-424X

International Heat Transfer Conference 4
August 31 - September 5, 1970, Paris-Versailles, France

EFFECTS OF HEAT-ENERGY RELEASE FROM SHOCK INDUCED EXOTHERMIC REACTIONS ON BOUNDARY-LAYER TRANSITION IN SHOCK-TUBE FLOWS

Get access (open in a dialog) DOI: 10.1615/IHTC4.2560
pages 1-11

要約

A shock tube study of the effect of free-stream thermal-energy release from shock induced exothermic reactions on boundary-layer transition is presented. The flow model is that of a boundary layer developing behind a moving shock wave in two-dimensional unsteady flow over a shock-tube wall. Matched sets of combustible hydrogen-oxygen-nitrogen mixtures and inert hydrogen-nitrogen mixtures were used to obtain transition data over a range of free-stream pressures from 100 to 1100 Torr, free-stream temperatures from 900°K to 2100°K, shock wave Mach numbers from 3.5 to 5.5, and transition Reynolds numbers from 0.2 × 106 to 1.6 × 106. A new technique is presented for determining transition. Results indicate that shock-tube boundary layers may, with certain conditions, undergo transition reversal.