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    Effects of solid circular cylinders on the dynamics of the Richtmyer–Meshkov instability

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    Name:
    Effects of solid circular cylinders on the dynamics of the Richtmyer–Meshkov instability final.pdf
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    8.410Mb
    Format:
    PDF
    Description:
    Accepted manuscript
    Embargo End Date:
    2021-03-12
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    Type
    Article
    Authors
    Al-Marouf, Mohamad cc
    Samtaney, Ravi cc
    KAUST Department
    Fluid and Plasma Simulation Group (FPS)
    Mechanical Engineering Program
    Physical Science and Engineering (PSE) Division
    KAUST Grant Number
    URF/1/1394-01
    Date
    2020-03-12
    Online Publication Date
    2020-03-12
    Print Publication Date
    2020-06
    Embargo End Date
    2021-03-12
    Submitted Date
    2019-02-23
    Permanent link to this record
    http://hdl.handle.net/10754/662137
    
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    Abstract
    We discuss the effect on the transient dynamics of the Richtmyer–Meshkov instability due to small-scale perturbations introduced by a set of solid circular cylinders located along the material interface. The arrangement of the cylinders mimics (in a two-dimensional domain) the presence of the solid supporting grid wires used in the formation of the material interface in an experimental setup. The numerical experiments are performed by utilizing an embedded boundary adaptive mesh refinement method. We quantify the effect of introducing the cylinders on the mixing layer growth and the mixedness level and qualitatively demonstrate the effect of the perturbation introduced by the cylinders on the mixing layer structure. We empirically model the effect of the solid cylinders based on their diameter and find that the effect of the cylinders on the mixing layer growth is a linear function of the cylinder diameter. The linear model allows us to predict the change in the mixing layer growth within a ±10% range, except for very small ratios of the initial perturbation amplitude of the density interface to the cylinder diameter.
    Citation
    Al-Marouf, M., & Samtaney, R. (2020). Effects of solid circular cylinders on the dynamics of the Richtmyer–Meshkov instability. Shock Waves. doi:10.1007/s00193-020-00942-3
    Sponsors
    This research was supported by the KAUST Office of Competitive Research Funds under Award No. URF/1/1394-01 and baseline research funds of R. Samtaney.
    Publisher
    Springer Science and Business Media LLC
    Journal
    Shock Waves
    DOI
    10.1007/s00193-020-00942-3
    Additional Links
    http://link.springer.com/10.1007/s00193-020-00942-3
    ae974a485f413a2113503eed53cd6c53
    10.1007/s00193-020-00942-3
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Mechanical Engineering Program

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