Patent ID: 9115602
Filing Date: 2015-08-25
Classification: F01D,F05D

Abstract:
1. A turbine exhaust diffuser for a gas turbine engine having a turbine section, the exhaust diffuser comprising: a flowpath located downstream of the turbine section; wherein the flowpath is defined at least in part by a turbine casing forming an OD flowpath boundary; wherein the flowpath is defined at least in part by a hub forming an ID flowpath boundary; a flow ramp positioned in the flowpath on the ID flowpath boundary, wherein the flow ramp extends circumferentially about the hub and includes a downstream, radially outward point that extends radially outward further from the ID flowpath boundary than an upstream, radially outward point that is positioned upstream from the downstream, radially outward point; and a wavy portion located at the downstream, radially outward point of the flow ramp, the wavy portion including a circumferentially extending, undulating surface defined by alternating axially extending crests and troughs.