ABOUT INSTABILITY OF GAS FLOW IN ENTRANCE COLLECTOR OF TURBINE
Features of non-stationary three-dimensional flow of viscous imperfect gas in entrance collector and nozzzle device of turbine are considered. It is revealed, that the significant part of passage section in typical design of collector is occupied with big whirlwinds and flow is unstable because of strong change of position and intensity of whirlwinds on time. Additional loadings on elements of design of collector and nozzle vanes, arising because of non-stationary character of flow, are determined.