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Analysis of the impact of droplets onto water films in drift eliminators

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URI: http://hdl.handle.net/10317/5499
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Author
López Núñez, Javier; Sánchez Kaiser, Antonio; Zamora Parra, Blas; Viedma Robles, Antonio; Vera Repullo, José Alfonso; [et al.]
Research Group
Mecánica de Fluidos e Ingeniería Térmica
Knowledge Area
Mecánica de Fluidos
Publication date
2015-04
Bibliographic Citation
J. López, A.S. Káiser, B. Zamora, A. Viedma, J.A. Vera, M. Jiménez, J. Ruiz, M. Lucas. “Analysis of the impact of droplets onto water films in drift eliminators”, 8th lnternational Conference on Multiphase Flow 2015, 20 -22 April 2015, Valencia, Spain.
Keywords
Cooling tower
Drift eliminator
Drop impact
Water film
CFD
Abstract
Water droplets emitted from cooling towers must be prevented for several reasons, human health hazards are the most important ones. The generation and control of these droplets are the main tasks for drift eliminators: devices installed inside mechanical draft cooling towers useful in order to prevent water droplets, originated by the crossflow between air and water inside the tower, from being released into the environment. This is the phenomenon called ‘drift’. In this paper, the operating conditions of a type of drift eliminator placed in a cooling tower are studied. This work is focused on the numerical and experimental characterization of the multiphase flow taking place when water droplets, drifted by the airstream, impact on the water film formed over the drift eliminators plates. The problem of these drop impacts has been studied throughout an experimental installation and a numerical model has been developed throughout the ANSYS software and several VOF multiphase flow ...
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