THE SONIC SURFACE IN THE INTER-BLADE CHANNEL OF THE LAST STAGE ROTOR WHEEL IN THE STEAM TURBINE OF LARGE OUTPUT

The Sonic Surface in the Inter-Blade Channel of the Last Stage Rotor Wheel in the Steam Turbine of Large Output

The paper deals with sonic surface in a modern turbine wheel consisting of non-prismatic ultra long blades.The whole Electronic Board inter-blade channel is choked.Different positions and shapes of the sonic line in particular cross-sections along the span are observed.The sensitivity of sonic line formation to small changes of effective shape of t

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