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Numerical Study of Spray-Induced Turbulence Using Industrial Fire-Mitigation Nozzles

Author

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  • Guodong Gai

    (DES-DM2S-STMF, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
    Institute for Applied Sciences, INSA Rouen Normandie, Clean Combustion Laboratory, CORIA UMR 6614 CNRS, 76000 Rouen, France)

  • Abdellah Hadjadj

    (Institute for Applied Sciences, INSA Rouen Normandie, Clean Combustion Laboratory, CORIA UMR 6614 CNRS, 76000 Rouen, France)

  • Sergey Kudriakov

    (DES-DM2S-STMF, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France)

  • Stephane Mimouni

    (EDF R&D, Fluid Dynamics Power Generation and Environment, 78401 Chatou, France)

  • Olivier Thomine

    (Aix Marseille University, LIS UMR 7020 CNRS, F-13397 Marseille, France)

Abstract

A numerical investigation of the spray-induced turbulence generated from industrial spray nozzles is carried out to better understand the roles of the nozzle spray on the fires or explosions in different accidental scenarios. Numerical simulations are first validated against experimental data in the single nozzle case using the monodisperse and polydisperse assumption for droplet diameters. The polydispersion of the nozzle spray is proven to be necessary to correctly predict the gas and droplet velocities. The turbulent kinetic energy has dominant values inside the spray cone, decreases rapidly with the vertical distance from the spray nozzle, and is strongly affected by the spray droplet diameter. On the contrary, the integral length scale is found to have high values outside the spray cone. Two interacting sprays injected from different nozzles are then investigated numerically using the validated polydisperse model. The water sprays generated from such industrial nozzles can generate turbulence of high intensity in the near-nozzle region, and this intensity decreases with the distance from the nozzles. A better understanding of the turbulence generated by the spray system can be beneficial for the evaluation of several important phenomena such as explosion enhancement. The guideline values obtained from this investigation of single and double nozzles can be useful for large-scale numerical simulations.

Suggested Citation

  • Guodong Gai & Abdellah Hadjadj & Sergey Kudriakov & Stephane Mimouni & Olivier Thomine, 2021. "Numerical Study of Spray-Induced Turbulence Using Industrial Fire-Mitigation Nozzles," Energies, MDPI, vol. 14(4), pages 1-20, February.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:4:p:1135-:d:503059
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    References listed on IDEAS

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    1. Mahmoud Gadalla & Jeevananthan Kannan & Bulut Tekgül & Shervin Karimkashi & Ossi Kaario & Ville Vuorinen, 2020. "Large-Eddy Simulation of ECN Spray A: Sensitivity Study on Modeling Assumptions," Energies, MDPI, vol. 13(13), pages 1-24, July.
    2. Kihyun Kim & Ocktaeck Lim, 2020. "Investigation of the Spray Development Process of Gasoline-Biodiesel Blended Fuel Sprays in a Constant Volume Chamber," Energies, MDPI, vol. 13(18), pages 1-22, September.
    3. Robert Keser & Alberto Ceschin & Michele Battistoni & Hong G. Im & Hrvoje Jasak, 2020. "Development of a Eulerian Multi-Fluid Solver for Dense Spray Applications in OpenFOAM," Energies, MDPI, vol. 13(18), pages 1-18, September.
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    Cited by:

    1. Guodong Gai & Olivier Thomine & Abdellah Hadjadj & Sergey Kudriakov & Anthony Wachs, 2023. "Preferential Concentration of Particles in Forced Turbulent Flows: Effects of Gravity," Energies, MDPI, vol. 16(6), pages 1-13, March.
    2. Waldemar Fedak & Roman Ulbrich & Grzegorz Ligus & Marek Wasilewski & Szymon Kołodziej & Barbara Wasilewska & Marek Ochowiak & Sylwia Włodarczak & Andżelika Krupińska & Ivan Pavlenko, 2021. "Influence of Spray Nozzle Operating Parameters on the Fogging Process Implemented to Prevent the Spread of SARS-CoV-2 Virus," Energies, MDPI, vol. 14(14), pages 1-19, July.

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