Visualization and PIV-study of the formation of a cooling film when flowing around the leading edge of the gas turbine nozzle blade

摘要

The results of particle image velocimetry near the perforated leading edge of the nozzle vane of gas turbine are presented. Visualization of the formation of cooling film on the surface of the blade with determination of its thickness is carried out. On the basis of the obtained results, the influence of the blown cooling air mass flow rate on the formation of the film is analyzed.