Hybrid venturi cooling system

摘要

A venturi device (42) for a turbine combustor includes a substantially annular outer liner (48); a substantially annular inner liner (46); a venturi channel (50) located between the substantially annular outer and inner liners; the substantially annular outer and inner liners being substantially V-shaped in axial cross-section, thereby defining a throat region (60); the substantially annular outer liner formed with an array of impingement holes (76) and the substantially annular inner liner formed with a plurality of vortex generators (78) facing the substantially annular outer liner.