Radial-inflow Gas Turbine
► Rotor | Main dimensions
The Main Dimensions menu item is used to define main dimensions of the rotor. Main Dimensions are forming the most important basis for all following design steps.
The real flow in a turbine rotor is turbulent and three-dimensional. Secondary flows, separation and reattachment in boundary layers, transient recirculation areas and other features may occur. Nevertheless it is useful - and it is common practice in the turbine design theory - to simplify the realistic flow applying representative streamlines for the first design approach.
Employing 1D-streamline theory the following cross sections are significant in particular:
•inlet (index 1)
•outlet/ suction side (index 2)
The cross section 2 is situated at the suction side in the connection flange of the component following the turbine.
The design of the main dimensions has to be made in a strict order. This will be secured by the following:One step within the design has to be finished completely before the next can be accomplished. That is to say, the changeability of a tab sheet will be disabled by CFturbo until all necessary parameters have been specified.