Abstract
In this paper, a three-dimensional computational study was carried out to study the turbulent reactive flow during the combustion of an inter-turbine burner (ITB) with varied circumferential cavity volume and fuel injection temperature. The present ITB configuration, which was based on the high g-load Ultra-Compact Combustor (UCC) concept, used curved radial vanes (CRV). The emphasis of this study was to determine the ITB performance changes due to the changes in circumferential cavity volume at cold and heated fuel injection conditions. The turbulent flow in the ITB was modeled with a RANSbased realizable k-e turbulence model. The JET-A liquid fuel spray combustion was modeled using an eddy-dissipation model with one-step global chemical reaction mechanism. Numerical computations were implemented with a second-order finite volume method on an unstructured grid. Detailed results of temperature distributions, turbulence intensity, vorticity, pressure drop, and species transport and tracking are presented and discussed.
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