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Investigation of turbulent inflow specification in Euler–Lagrange simulations of mid-field spray

Journal Article · · Physics of Fluids
DOI:https://doi.org/10.1063/5.0042900· OSTI ID:1850326
 [1];  [2];  [2];  [3]
  1. Univ. of Florida, Gainesville, FL (United States). Dept. of Mechanical and Aerospace Engineering; Univ. of Florida, Gainesville, FL (United States)
  2. Univ. of Washington, Seattle, WA (United States). Dept. of Mechanical Engineering
  3. Univ. of Florida, Gainesville, FL (United States). Dept. of Mechanical and Aerospace Engineering

The process of atomization of a liquid jet by a parallel high-speed gas stream results in a spray, whose downstream development is of considerable interest to several applications. The round jet spray can be spatially divided into (i) a near-field (near-nozzle) region of liquid atomization and (ii) a downstream mid-field region of fully-dispersed droplets. In order to accurately model mid-field droplet dispersion, this work aims at developing a rigorous and robust injection model for Euler–Lagrange spray simulations. Results from experiments are used to obtain the relevant droplet number density, size distribution, and mean and standard deviation velocity distributions of the injection model, systematically in a step-by-step process. Two-phase large eddy simulations are performed by stochastically generating the Lagrangian droplets at the inlet of the mid-field region. Number flux, diameter distribution, mean velocity, and other time-averaged statistics at several downstream locations are shown to agree well with the corresponding experimental data.

Research Organization:
Univ. of Florida, Gainesville, FL (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); Office of Naval Research (ONR)
Grant/Contract Number:
NA0002378
OSTI ID:
1850326
Journal Information:
Physics of Fluids, Journal Name: Physics of Fluids Journal Issue: 3 Vol. 33; ISSN 1070-6631
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

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