Lateral jet injection into typical combustor flowfields

A research program is underway which deals both experimentally and theoretically with the problem of primary and dilution lateral jet injection into typical combustor flowfields in the absence of combustion. Parameter variations to be systematically investigated include: lateral jet velocity, combustor cross-flow inlet swirl strength, and downstream contraction nozzle. The basic aim is to characterize the time-mean and turbulence flowfield with a variety of parameter settings, recommend appropriate turbulence model advances, and implement and exhibit results of flowfield predictions. The present study emphasizes the predictive capability of a fully three-dimensional computer code with k-e turbulence model, with preliminary experimental evaluation using smoke and helium bubble flow visualization, and five-hole pitot probe time-mean velocity measurements.