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• W2134583721 abstract "Experimental results on the effect of swirl and combustion are presented to simulate the flow dynamics of Lean Direct Injection (LDI) configuration gas turbine combustion. The selected configuration is typical because it does not make use a premixing zone and relies totally on the swirl and fuel injector to accomplish rapid mixing. Specifically, the effect of radial distribution of combustion air and swirl in a burner are examined under non-burning and burning conditions using propane as the fuel. The present study explores single swirler interaction using an experimental double concentric swirl burner that simulates one swirler of a practical gas turbine combustor. Three-dimensional (3-D) flowfield data has been obtained using Particle Image Velocimetry (PIV) for varying swirl dis tributions in the burner. Flow characteristics of the resulting flowfield, both without and with combustion, have been examined for the effect of co - and counter-swirl under lean direct injection conditions using unconfined and confined combustor geometry. This data then allows one to determine the local swirl number of the resulting flow. Combustion alters the swirl number of the flow. Results showed that both swirl and combustion has significant effect on the characteristics of the internal and external recirculation zones. The calculated local swirl number differs significantly from that determined using geometrical consideration of the swirler. The effect of confinement on the flowfield distribution was determined under non-burning conditions. However, the effect of combustion was determined under unconfined condition only. Combustion enhances the recirculation zone in the unconfined geometry. Combustion provides greater velocity magnitudes than their counter non-combustion conditions. The counter-swirl combination resulted in smaller and more well-defined internal recirculation" @default.
• W2134583721 created "2016-06-24" @default.
• W2134583721 creator A5052029864 @default.
• W2134583721 creator A5058340528 @default.
• W2134583721 date "2004-01-05" @default.
• W2134583721 modified "2023-09-25" @default.
• W2134583721 title "Effect of Swirl on Flow Dynamics in Unconfined and Confined Gaseous Fuel Flames" @default.
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• W2134583721 doi "https://doi.org/10.2514/6.2004-813" @default.
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