A numerical study of the characteristics of a radiant heat flux in a turbine cascade

A Monte-Carlo algorithm is developed for solving the problem of radiant heat transfer in a gas turbine blade passage defined by sections of parabolas. The distribution of the absorbed radiant energy over the blade profile at the cascade inlet and outlet is examined. The throughput capacity of a cascade and its guiding properties relative to a radiant heat flux are investigated with allowance for the reflective characteristics of the blading. It is shown that the effect of radiant heat transfer on the thermal state of the blading of high-temperature turbines is particularly pronounced in the case of film cooling.