Abstract: A fluid handling apparatus 10 has a plurality of fluid handling subassemblies 16, each of which is mounted in a corresponding one of mounting recessed portions 14 of a plate body 12. Each of the fluid handling subassemblies 16 includes: an injecting section 26 for injecting a fluid; a fluidized section 28 for receiving the fluid from the injecting section 26 to allow the fluid to continuously flow downwards; a fluid housing chamber 30 for receiving the fluid from the fluidized section 28; a wall portion 20 formed so as to extend in substantially vertical directions between the fluid housing chamber 30 and the fluidized section 28; an opening 20a for allowing the fluid in the fluidized section 28 to enter the fluid housing chamber 30; and a surface-area increasing means (22, 32, 34) for increasing the area of a contact surface with the fluid in the fluidized section 28.

Abstract: A gas turbine engine rotor stack includes one or more longitudinally outwardly concave spacers. Outboard surfaces of the spacers may be in close facing proximity to inboard tips of vane airfoils. The spacers may provide a longitudinal compression force that increases with rotational speed.