TURBOMACHINE COMPONENT WITH FLOW GUIDES FOR FILM COOLING HOLES IN FILM COOLING ARRANGEMENT

摘要

A turbomachine component having film cooling arrangement includes a cooling passage, an external wall having an outer surface to be positioned in a hot gas path and an inner surface forming a part of the cooling passage, film cooling holes formed through the external wall, and a flow guide arrangement having a flow guide corresponding to one of the film cooling holes. Each film cooling hole has an inlet at the inner surface and an outlet at the outer surface. The inlet receives a cooling fluid from the cooling passage and the outlet releases it over the outer surface. The flow guide positioned at the inlet of the corresponding film cooling hole on the inner surface redirects within the cooling passage a flow of the cooling fluid such that the flow makes a U-turn before entering the inlet of the corresponding film cooling hole in a reversed flow.