Wake and Shock Interactions in a Transonic Turbine Stage
OXFORD UNIV (UNITED KINGDOM) DEPT OF ENGINEERING SCIENCE
Pagination or Media Count:
The strong trailing-edge shock waves from the nozzle guide vanes of transonic turbine stages can give rise to interactions with the downstream rotor which are significantly more severe than is the case with lower pressure ratio stages. It is therefore important to study such effects in detail both from the point of view of stage power output and more importantly from that of heat transfer rates. A study has been made of a transonic rotor profile in a static cascade in which the effect of shock wave interaction is simulated by means of an array of bars rotating at the correct speed and spacing upstream of the stationary rotor blades. Detailed heat transfer rate measurements made with rapid response gauges enable the wake and shock phenomena to be separated.
- Fluid Mechanics
- Jet and Gas Turbine Engines