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

Blog Article

The paper deals with sonic surface in a modern turbine wheel consisting of non-prismatic ultra long blades.The whole inter-blade MIND RETREAT 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 the inter-blade channel in the root section and the influence of inlet angle, stagger angle and pitch/chord ratio in the tip section are discussed.

The problematic of sonic line development in the case of supersonic inlet flow filed is also described.The presented work is Bread Lame/Dough Blades based on results of theoretical, experimental and numerical approaches.