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Swirl Influence on Mixing and Reactive Flows

[+] Author Affiliations
Teresa Parra-Santos, Miguel A. Rodriguez, Francisco Castro, J. Ruben Perez

University of Valladolid, Valladolid, Spain

Artur N. Gutkowski

Technical University of Lodz, Lodz, Poland

Victor Mendoza

Universidad de Tarapaca, Arica, Chile

Robert Z. Szasz

Lund University, Lund, Sweden

Paper No. FEDSM2016-7502, pp. V01BT24A001; 4 pages
doi:10.1115/FEDSM2016-7502
From:
  • ASME 2016 Fluids Engineering Division Summer Meeting collocated with the ASME 2016 Heat Transfer Summer Conference and the ASME 2016 14th International Conference on Nanochannels, Microchannels, and Minichannels
  • Volume 1B, Symposia: Fluid Mechanics (Fundamental Issues and Perspectives; Industrial and Environmental Applications); Multiphase Flow and Systems (Multiscale Methods; Noninvasive Measurements; Numerical Methods; Heat Transfer; Performance); Transport Phenomena (Clean Energy; Mixing; Manufacturing and Materials Processing); Turbulent Flows — Issues and Perspectives; Algorithms and Applications for High Performance CFD Computation; Fluid Power; Fluid Dynamics of Wind Energy; Marine Hydrodynamics
  • Washington, DC, USA, July 10–14, 2016
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 978-0-7918-5029-9
  • Copyright © 2016 by ASME

abstract

The interaction of two confined coaxial jets has been studied using Computational Fluid Dynamics. Annular jet flows over 8 flat blade swirl generator. Numerical simulation uses RNG k-ε turbulence model. These models are suitable for turbulent swirl dominated flows. Intermediate swirl injector has been simulated and the flow patterns for non-reactive and reactive cases are contrasted. Low swirling injectors do not promote the fluid to turn over near the center of the chamber, resulting larger mixing zones with weak gradients. Whereas large swirling flows promote the formation of an Inner Recirculation Zone that is a precursor of higher gradients. Probability Density Function is selected as combustion model. High swirl numbers let fix the location of the reactive zone.

Copyright © 2016 by ASME

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