• 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 LibguidePlumX LibguideSubmit an Item

    Statistics

    Display statistics

    Pressure-dependent grain dissolution using discrete element simulations

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Type
    Article
    Authors
    Cha, Minsu cc
    Santamarina, Carlos cc
    KAUST Department
    Ali I. Al-Naimi Petroleum Engineering Research Center (ANPERC)
    Energy Resources and Petroleum Engineering
    Physical Science and Engineering (PSE) Division
    Date
    2019-09-24
    Online Publication Date
    2019-09-24
    Print Publication Date
    2019-11
    Embargo End Date
    2020-09-24
    Permanent link to this record
    http://hdl.handle.net/10754/659497
    
    Metadata
    Show full item record
    Abstract
    Pressure solution-precipitation is a diagenetic process often involved in compaction, hardening, creep and healing. This study explores the evolution of pressure-dependent mineral dissolution using the discrete element method where grains are gradually contracted in proportion to the total normal force they carry. Under zero lateral strain and constant vertical stress boundary conditions, contact forces homogenize during the early stages of dissolution, there is a minor increase in coordination number and the global porosity decreases (even though there is no reprecipitation in these simulations). There is a transient drop in the lateral stress, shear bands start to emerge as the horizontal stress reaches a minimum value. The porosity is higher and the coordination number is lower within shear bands than in the surrounding soil wedges; furthermore, interparticle forces tend to homogenize within wedges, while marked force chains develop within shear bands. On the other hand, there is no shear localization during pressure solution simulations under isotropic stress boundary conditions. Regardless of the boundary conditions, the initially uniform grain size distribution evolves towards a unimodal distribution; improved particle grading facilitates the global reduction in porosity and the associated increase in coordination number. The emergence of shear discontinuities during pressure solution under zero lateral strains may explain the non-tectonic origin of polygonal fault systems observed in marine sediments and lacustrine deposits.
    Citation
    Cha, M., & Santamarina, J. C. (2019). Pressure-dependent grain dissolution using discrete element simulations. Granular Matter, 21(4). doi:10.1007/s10035-019-0960-0
    Sponsors
    Support for this research was provided by the Department of Energy Savannah River Operations Office, the Goizueta Foundation and the KAUST endowment. The authors are grateful to the anonymous reviewers for insightful comments. G. Abelskamp edited the manuscript.
    Publisher
    Springer Nature
    Journal
    Granular Matter
    DOI
    10.1007/s10035-019-0960-0
    Additional Links
    http://link.springer.com/10.1007/s10035-019-0960-0
    ae974a485f413a2113503eed53cd6c53
    10.1007/s10035-019-0960-0
    Scopus Count
    Collections
    Articles; Ali I. Al-Naimi Petroleum Engineering Research Center (ANPERC); Physical Science and Engineering (PSE) Division

    entitlement

     
    DSpace software copyright © 2002-2021  DuraSpace
    Quick Guide | Contact Us | Send Feedback
    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.