The Goertler instability of a hypersonic boundary layer and its influence on the wall heat transfer are experimentally analyzed. Measurements, made in a wind tunnel by means of a computerized infrared (IR) imaging system, refer to the flow over two-dimensional concave walls. Wall temperature maps (that are interpreted as surface flow visualizations) and spanwise heat transfer fluctuations are presented. Measured vortices wavelengths are correlated to non-dimensional parameters and compared with numerical predictions from the literature.
Goertler Instability of A Hypersonic Boundary-layer / DE LUCA, Luigi; Cardone, Gennaro; D. A., DE LA CHEVALERIE; A., Fonteneau. - In: EXPERIMENTS IN FLUIDS. - ISSN 0723-4864. - STAMPA. - 16:(1993), pp. 10-16.
Goertler Instability of A Hypersonic Boundary-layer
DE LUCA, LUIGI;CARDONE, GENNARO;
1993
Abstract
The Goertler instability of a hypersonic boundary layer and its influence on the wall heat transfer are experimentally analyzed. Measurements, made in a wind tunnel by means of a computerized infrared (IR) imaging system, refer to the flow over two-dimensional concave walls. Wall temperature maps (that are interpreted as surface flow visualizations) and spanwise heat transfer fluctuations are presented. Measured vortices wavelengths are correlated to non-dimensional parameters and compared with numerical predictions from the literature.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
