• Login
    View Item 
    •   Home
    • Research
    • Articles
    • View Item
    •   Home
    • Research
    • Articles
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of KAUSTCommunitiesIssue DateSubmit DateThis CollectionIssue DateSubmit Date

    My Account

    Login

    Quick Links

    Open Access PolicyORCID LibguideTheses and Dissertations LibguideSubmit an Item

    Statistics

    Display statistics

    Mitigating cavitation erosion using biomimetic gas-entrapping microtextured surfaces (GEMS)

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Thumbnail
    Name:
    eaax6192.full.pdf
    Size:
    2.653Mb
    Format:
    PDF
    Description:
    Published version
    Download
    Type
    Article
    Authors
    Gonzalez-Avila, Silvestre Roberto cc
    Nguyen, Dang Minh
    Arunachalam, Sankara cc
    Domingues, Eddy cc
    Mishra, Himanshu cc
    Ohl, Claus-Dieter cc
    KAUST Department
    Biological and Environmental Sciences and Engineering (BESE) Division
    Environmental Science and Engineering Program
    Interfacial Lab
    Water Desalination and Reuse Research Center (WDRC)
    Date
    2020-03-27
    Online Publication Date
    2020-03-27
    Print Publication Date
    2020-03
    Submitted Date
    2019-04-08
    Permanent link to this record
    http://hdl.handle.net/10754/662357
    
    Metadata
    Show full item record
    Abstract
    Cavitation refers to the formation and collapse of vapor bubbles near solid boundaries in high-speed flows, such as ship propellers and pumps. During this process, cavitation bubbles focus fluid energy on the solid surface by forming high-speed jets, leading to damage and downtime of machinery. In response, numerous surface treatments to counteract this effect have been explored, including perfluorinated coatings and surface hardening, but they all succumb to cavitation erosion eventually. Here, we report on biomimetic gas-entrapping microtextured surfaces (GEMS) that robustly entrap air when immersed in water regardless of the wetting nature of the substrate. Crucially, the entrapment of air inside the cavities repels cavitation bubbles away from the surface, thereby preventing cavitation damage. We provide mechanistic insights by treating the system as a potential flow problem of a multi-bubble system. Our findings present a possible avenue for mitigating cavitation erosion through the application of inexpensive and environmentally friendly materials.
    Citation
    Gonzalez-Avila, S. R., Nguyen, D. M., Arunachalam, S., Domingues, E. M., Mishra, H., & Ohl, C.-D. (2020). Mitigating cavitation erosion using biomimetic gas-entrapping microtextured surfaces (GEMS). Science Advances, 6(13), eaax6192. doi:10.1126/sciadv.aax6192
    Sponsors
    We thank X. Pita, scientific illustrator at King Abdullah University of Science and Technology (KAUST), for preparing Fig. 2 and V. Unkefer (KAUST) for assistance in editing of the manuscript. H.M. and S.A. thank G. Mahadik (KAUST) for providing specimens of sea skaters (H. germanus) and W. S. Hwang (National University of Singapore) and L. Cheng (Scripps Institution of Oceanography, USA) for providing specimens of springtails.
    The research reported in this publication was supported by funding from KAUST under award number BAS/1/1070-01-01.
    Publisher
    American Association for the Advancement of Science (AAAS)
    Journal
    Science Advances
    DOI
    10.1126/sciadv.aax6192
    Additional Links
    https://advances.sciencemag.org/lookup/doi/10.1126/sciadv.aax6192
    ae974a485f413a2113503eed53cd6c53
    10.1126/sciadv.aax6192
    Scopus Count
    Collections
    Articles; Biological and Environmental Science and Engineering (BESE) Division; Environmental Science and Engineering Program; Water Desalination and Reuse Research Center (WDRC)

    entitlement

     
    DSpace software copyright © 2002-2023  DuraSpace
    Quick Guide | Contact Us | KAUST University Library
    Open Repository is a service hosted by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items. For anonymous users the allowed maximum amount is 50 search results.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.