Evaporatively cooled rotor for a gas turbine engine

An evaporatively cooled rotor adapted for rotation about an axis and having an internal cavity defining an inner surface and including a vaporization section disposed radially outwardly with respect to the rotational axis from a condensing section, the rotor further comprising:

• a radial array of capture shelves located in the vaporization section, each capture shelf having a lip disposed at a substantially constant radius from the rotational axis and well adjacent to the lip for capturing cooling fluid contained within the internal cavity and flowing radially outwardly in a centrifugal field generated during rotation of the rotor, the capture shelves restricting the flow of cooling fluid to distribute cooling fluid over the inner surface of the rotor in the vaporization section;
• a radially extending baffle proximate to the lip of each capture shelf, the baffle extending circumferentially so as to prevent a radially flowing cooling fluid from being expelled from the capture shelf;
• and
• means for providing fluid communication between adjacent shelves in the radial array.

An evaporatively cooled rotor adapted for rotation about an axis and having an internal cavity including a vaporization section disposed radially outwardly with respect to the rotational axis from a condensing section, the rotor further comprising:

• a radial array of capture shelves located in the vaporization section, each capture shelf having a lip disposed at a substantially constant radius from the rotational axis and a well adjacent to the lip for capturing cooling fluid;
• a radially extending baffle proximate to the lip of each capture shelf, such that the baffle prevents the flow of cooling fluid from being expelled from the capture shelf;
• at least one channel extending in a substantially radial direction through each capture shelf to permit fluid communication between adjacent capture shelves in the radial array;
• and
• at least one barrier located on the inner surface of the rotor in the condensing section across the flowpath of the fluid.