Влияние входного поля полного давления на высоту смыкания вторичных течений в сопловых аппаратах современных ТВД

Abstract

The influence of non-uniform inlet field of total pressure on the distribution of secondary losses in flat nozzle grids of different types is considered. According to the results of the studies, the character of secondary flow distribution depends on the type of profile and the nature of the inlet full pressure diagram. The presence of even a minimal gradient in the total pressure at the inlet changes the type of aerodynamic characteristics of the nozzle grid. Not taking this factor into account can lead to the necessity to refine the entire turbine, which will increase the development time.