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Large Eddy Simulation of the spray formation in confinements |
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| Affiliation: | 1. Laboratory of Environmental and Thermal Engineering, Universidade de São Paulo, São Paulo, Brazil;2. Institute for Energy and Power Plant Technology, Technische Universität Darmstadt, Darmstadt, Germany;3. Department of Mechanical Engineering, Technische Universiteit Eindhoven, Eindhoven, Netherlands;1. Dept. of Mechanical & Mechatronics Eng., University of Waterloo 200 University Ave West, Waterloo, ON, N2L 3G1, Canada;2. Dept. of Mechanical & Industrial Eng., Ryerson University 350 Victoria Street, Toronto, ON, M5B 2K3, Canada;1. Argonne National Laboratory, 9700 S. Cass Ave., Argonne, IL, USA;2. Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, TN 37831, USA;1. Sandia National Laboratories, MS 9053, PO Box 969, Livermore, CA 94551-0969, USA;2. University of Michigan, 1231 Beal Ave., Ann Arbor, MI 48109, USA |
| Abstract: | The particle and powder properties produced within spray drying processes are influenced by various unsteady transport phenomena in the dispersed multiphase spray flow in a confined spray chamber. In this context differently scaled spray structures in a confined spray environment have been analyzed in experiments and numerical simulations. The experimental investigations have been carried out with Particle-Image-Velocimetry to determine the velocity of the gas and the discrete phase. Large-Eddy-Simulations have been set up to predict the transient behaviour of the spray process and have given more insight into the sensitivity of the spray flow structures in dependency from the spray chamber design. |
| Keywords: | LES PIV Spray flow Droplet clustering Twin-fluid atomization |
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