Patent ID: 6851263

Claim:
A liner for a gas turbine engine combustor having a trapped vortex cavity formed therein, wherein a dome plate is positioned at an upstream end of said combustor, said liner comprising: (a) a first portion positioned adjacent and connected to said dome plate, wherein said first liner portion extends downstream from and substantially perpendicular to said dome plate; (b) a second portion extending substantially perpendicular to said first liner portion and substantially parallel to said dome plate; (c) a first arcuate portion having a predetermined radius located between said first and second liner portions, wherein said predetermined radius of said first arcuate liner portion is at least approximately 3-5 times a thickness for said first and second liner portions; (d) a third portion extending downstream and substantially perpendicular to said second liner portion; and, (e) a second arcuate portion located between said second and third liner portions; wherein said first liner portion, said second liner portion, said first arcuate liner portion and a portion of said dome plate form said trapped vortex cavity.