Abstract: An experimental investigation is carried out to study the development of Goertler vortices in hypersonic flow (due to 2D and 3D viscous interactions) and their effects on the wall heat transfer. The presence of vortices is detected through the spanwise periodic variation of sector, the wall heat transfer coefficient measured by means of a computerized infrared (IR) imaging system. Owing to the relatively high spatial frequencies contained in the output thermal images, a proper image restoration is developed. Measured wavelengths are compared with theoretical predictions.!14
展开▼
