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Title: Experimentally validated high-fidelity simulations of a liquid jet in supersonic crossflow

Abstract

Here, utilizing recent advancements in computational schemes for compressible, multiphase flows, this work features a parametric study of a pure liquid jet in supersonic crossflow that involves simulating the atomization process for four values of momentum-flux ratio. These simulations are validated against experimental results measured with high-speed X-ray imaging, which confirm the accuracy of the numerical approach. Also, the effect of numerical resolution on some flow behavior is investigated, revealing convergence of the jet shape and surface instability wavelength. Analysis of the resulting sprays includes statistical descriptions of the liquid distribution, liquid structures created through breakup, interfacial instabilities, and dominant flow features. As the flowrate increases, the spray penetrates further, it becomes more disperse, and less liquid impacts the wall, but the droplet size distribution changes little. The wavelength of instabilities on the windward side of the jet diverges from measured trends in subsonic crossflows. In a visualization of the time-averaged flow, counter-rotating vortices are observed along the jet core and in the wake, affecting the process of primary atomization and early droplet trajectories.

Authors:
 [1]; ORCiD logo [2]
  1. Cornell University, Ithaca, NY (United States); National Renewable Energy Laboratory (NREL), Golden, CO (United States). National Wind Technology Center
  2. Cornell University, Ithaca, NY (United States)
Publication Date:
Research Org.:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Wind Energy Technologies Office; Air Force Research Laboratory (AFRL); Taitech, Inc.; National Science Foundation (NSF)
OSTI Identifier:
1883198
Report Number(s):
NREL/JA-5000-82257
Journal ID: ISSN 0301-9322; MainId:83030;UUID:464e7dd9-f6ea-4ddd-afbd-90fb84b6482e;MainAdminID:64474
Grant/Contract Number:  
AC36-08GO28308; DGE-1650441
Resource Type:
Accepted Manuscript
Journal Name:
International Journal of Multiphase Flow
Additional Journal Information:
Journal Volume: 156; Journal ID: ISSN 0301-9322
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; atomization; compressible flow; equivalent path length; liquid jet in supersonic crossflow; primary breakup; transonic

Citation Formats

Kuhn, Michael B., and Desjardins, Olivier. Experimentally validated high-fidelity simulations of a liquid jet in supersonic crossflow. United States: N. p., 2022. Web. doi:10.1016/j.ijmultiphaseflow.2022.104195.
Kuhn, Michael B., & Desjardins, Olivier. Experimentally validated high-fidelity simulations of a liquid jet in supersonic crossflow. United States. https://doi.org/10.1016/j.ijmultiphaseflow.2022.104195
Kuhn, Michael B., and Desjardins, Olivier. Thu . "Experimentally validated high-fidelity simulations of a liquid jet in supersonic crossflow". United States. https://doi.org/10.1016/j.ijmultiphaseflow.2022.104195. https://www.osti.gov/servlets/purl/1883198.
@article{osti_1883198,
title = {Experimentally validated high-fidelity simulations of a liquid jet in supersonic crossflow},
author = {Kuhn, Michael B. and Desjardins, Olivier},
abstractNote = {Here, utilizing recent advancements in computational schemes for compressible, multiphase flows, this work features a parametric study of a pure liquid jet in supersonic crossflow that involves simulating the atomization process for four values of momentum-flux ratio. These simulations are validated against experimental results measured with high-speed X-ray imaging, which confirm the accuracy of the numerical approach. Also, the effect of numerical resolution on some flow behavior is investigated, revealing convergence of the jet shape and surface instability wavelength. Analysis of the resulting sprays includes statistical descriptions of the liquid distribution, liquid structures created through breakup, interfacial instabilities, and dominant flow features. As the flowrate increases, the spray penetrates further, it becomes more disperse, and less liquid impacts the wall, but the droplet size distribution changes little. The wavelength of instabilities on the windward side of the jet diverges from measured trends in subsonic crossflows. In a visualization of the time-averaged flow, counter-rotating vortices are observed along the jet core and in the wake, affecting the process of primary atomization and early droplet trajectories.},
doi = {10.1016/j.ijmultiphaseflow.2022.104195},
journal = {International Journal of Multiphase Flow},
number = ,
volume = 156,
place = {United States},
year = {Thu Jul 21 00:00:00 EDT 2022},
month = {Thu Jul 21 00:00:00 EDT 2022}
}

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