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Investigation of turbulent multiphase swirling jets

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Abstract

Swirl has been employed as a mechanism for enhancing the spreading rate of jets, especially in the multiphase context of liquid droplets suspended in a gaseous jet. This work examines the effect of the swirl phenomenon on the downstream development of turbulent round jet sprays using Euler–Lagrange simulations. Two simulation sets are performed: The first set consists of single-phase simulations, and the second set consists of two-phase large eddy simulations where the droplets are stochastically added to the computational domain using an injection model. The simulations consider five different non-dimensional swirl strengths from 0.0 to 2.0 at a Reynolds number of 50,000. As simulation results, we obtain the total normalized number flux of droplets and for each droplet size bin along with the mean and standard deviation of the droplet velocity distributions. We quantify the influence of swirl on the higher-order statistics of the spray behavior.

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Acknowledgements

This work was sponsored by the Office of Naval Research (ONR) as part of the Multidisciplinary University Research Initiatives (MURI) Program, under Grant No. N00014-16-1-2617.

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Authors and Affiliations

  1. Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, FL, 32608, USA

    Jungyun Kim & S. Balachandar

  2. State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, 310027, China

    Kai Liu

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  1. Jungyun Kim
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Kim, J., Liu, K. & Balachandar, S. Investigation of turbulent multiphase swirling jets. Acta Mech 235, 3313–3330 (2024). https://doi.org/10.1007/s00707-024-03857-7

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