Abstract
Results are reported of three-component laser-Doppler measurements in the highly complex flow field behind a model nozzle as used for the atomization of liquid fuel in gas turbines. The flow field consists of two concentric air streams leaving a concentric dual nozzle system both with slightly different but equally directed swirls. The outer ring flow forms a 1 mm thick ring film which interacts strongly with the inner flow and the surrounding flow field.
Mean and rms velocities were measured as well as double and triple cross-correlations of the three velocity components. Frequency analysis exhibited a strong coherent fluctuation of the radial velocity component near the nozzle exit. The measured data are needed to improve atomization and combustion effectiveness and for numerical modelling of the flow.
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References
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© 1997 Springer-Verlag Berlin Heidelberg
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Lehmann, B., Hassa, C., Helbig, J. (1997). Three-Component Laser-Doppler Measurements of the Confined Model Flow Behind a Swirl Nozzle. In: Adrian, R.J., Durão, D.F.G., Durst, F., Heitor, M.V., Maeda, M., Whitelaw, J.H. (eds) Developments in Laser Techniques and Fluid Mechanics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-60911-4_24
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DOI: https://doi.org/10.1007/978-3-642-60911-4_24
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-64604-1
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