fuel injection nozzle flame on the body stabilization with dimples / how to groove with surface and the associated

摘要

PROBLEM TO BE SOLVED: To provide a fuel injection head for a fuel nozzle used for a gas turbine combustor.;SOLUTION: A fuel injection head (14) for a fuel nozzle (10) includes a substantially hollow body (20) formed with an upstream end face (22), a downstream end face (24) and a peripheral wall (26) extending therebetween. A plurality of pre-mix tubes or passages (28) extend axially through the hollow body with inlets (30) at the upstream end face and outlets (32) at the downstream end face. An exterior surface of the downstream end face is formed with three-dimensional surface features (44, 56, 64, 76, 80, 82, 90) that increase a total surface area of the exterior surface as compared to a substantially flat, planar downstream end face.;COPYRIGHT: (C)2012,JPO&INPIT