Unsteady heat transfer in stator-rotor interaction by two-equation turbulence model

A transonic turbine stage is completed by means of an unsteady Navier-Stoke s salver. A two-equation turbulence model is coupled to a transition model based an integral parameters and an extra transport equation. The transonic stage is modeled in two dimensions with a variable span height for the rot or row. The analysis of the transonic turbine stage with stator trailing ed ge coolant ejection is carried out to compute the unsteady pressure and hea t transfer distribution on the rotor blade under variable operating conditi ons. The stator coolant ejection allows the total pressure losses to be red uced, although no significant effects on the rotor heat transfer are found both in the computer simulation and the measurements The results compare fa vorably with experiments in terms of both pressure distribution and heat tr ansfer around the rotor blade.