Multi-slot inter-turbine duct assembly for use in a turbine engine

摘要

A bypass channel for use in an inter-turbine transition duct assembly (32) of a turbine engine (10) is connected to a suction port (64) disposed upstream of a high-pressure turbine (22) and at least two injection openings (60) disposed downstream of the high-pressure turbine (22). The flow through the bypass channel is motivated by the natural pressure difference across the high-pressure turbine (22). The flow out of the at least two injection openings (60) is used to energize the boundary layer flow downstream of the high-pressure turbine (22) in order to allow for the use of a more aggressively expanded inter-turbine duct (40) without boundary layer separation. Methods for optimizing the flow through the turbine engine (10) are also disclosed.