Temperature Profile Development in Turbulent Mixing of Coolant Jets With a Confined Hot Crossflow

The mixing of coolant air jets with the hot gas exiting the primary zone is of major importance to the combustor exit temperature profile. Geometry and momentum flux ratios are the dominant parameters. A theoretical and experimental study of single as well as opposite-wall jet injection into a hot crossflow reveals the applicability and limitations of existing correlations. Modified correlations are presented for opposite-wall injection with jets of different momentum flux ratios. The advantages in applying field methods for describing the flow are discussed.