ROTOR FOR A THERMAL TURBOMACHINE

摘要

The invention relates to a rotor (10) for a thermal turbomachine, in particular a gas turbine, said rotor being designed to guide a medium in the rotor interior. In order to guide the medium in the interior with little flow loss, a pair (25) of rotor discs (34, 42) are provided which lie against one another. The first of the two rotor discs (34) of the pair (25) has bores (36) in order to supply the medium from the outside into the rotor interior and rib-shaped ribs (40) in order to further guide the medium in the direction of the rotational axis (13). The second rotor disc (34, 42) of the pair (25) is formed using an auxiliary web (46) such that the flow passages formed between the ribs (40) when seen in the circumferential direction are axially delimited at least over the majority of the radial extension of the ribs (40).