Capillary pressure at irregularly shaped pore throats

Implications for water retention characteristics

Hyoung Suk Suh, Dong Hun Kang, Jaewon Jang, Kwang Yeom Kim, Tae Sup Yun

    Research output: Contribution to journalArticle

    3 Citations (Scopus)

    Abstract

    The random shapes of pore throats in geomaterials hinder accurate estimation of capillary pressure, and conventional pore network models that simply use the Young–Laplace equation assuming circular pore throats overestimate the capillary pressure. As a solution to this problem that does not complicate the pore network model or slow its implementation, we propose a new morphological analysis method to correlate the capillary pressure at an irregular pore channel with its cross-sectional geometry using lattice Boltzmann (LB) simulation and Mayer and Stowe–Princen theory. Geometry-based shape factors for pore throats are shown here to correlate strongly with the capillary pressure obtained by LB simulation. Water retention curves obtained by incorporating the morphological calibration into conventional pore network simulation and their correlative scheme agree well with experimental data. The suggested method is relevant to pore-scale processes such as geological CO2 sequestration, methane bubbling from wetlands, and enhanced carbon recovery.

    Original languageEnglish (US)
    Pages (from-to)51-58
    Number of pages8
    JournalAdvances in Water Resources
    Volume110
    DOIs
    StatePublished - Dec 1 2017

    Fingerprint

    capillary pressure
    water retention
    simulation
    geometry
    carbon sequestration
    methane
    wetland
    calibration
    carbon
    method

    Keywords

    • Capillary pressure
    • Irregular pore channel
    • Lattice Boltzmann simulation
    • Shape factor
    • Water retention curve

    ASJC Scopus subject areas

    • Water Science and Technology

    Cite this

    Capillary pressure at irregularly shaped pore throats : Implications for water retention characteristics. / Suh, Hyoung Suk; Kang, Dong Hun; Jang, Jaewon; Kim, Kwang Yeom; Yun, Tae Sup.

    In: Advances in Water Resources, Vol. 110, 01.12.2017, p. 51-58.

    Research output: Contribution to journalArticle

    Suh, Hyoung Suk ; Kang, Dong Hun ; Jang, Jaewon ; Kim, Kwang Yeom ; Yun, Tae Sup. / Capillary pressure at irregularly shaped pore throats : Implications for water retention characteristics. In: Advances in Water Resources. 2017 ; Vol. 110. pp. 51-58.
    @article{4bfc4433b6944db5b89dbec8f8e25967,
    title = "Capillary pressure at irregularly shaped pore throats: Implications for water retention characteristics",
    abstract = "The random shapes of pore throats in geomaterials hinder accurate estimation of capillary pressure, and conventional pore network models that simply use the Young–Laplace equation assuming circular pore throats overestimate the capillary pressure. As a solution to this problem that does not complicate the pore network model or slow its implementation, we propose a new morphological analysis method to correlate the capillary pressure at an irregular pore channel with its cross-sectional geometry using lattice Boltzmann (LB) simulation and Mayer and Stowe–Princen theory. Geometry-based shape factors for pore throats are shown here to correlate strongly with the capillary pressure obtained by LB simulation. Water retention curves obtained by incorporating the morphological calibration into conventional pore network simulation and their correlative scheme agree well with experimental data. The suggested method is relevant to pore-scale processes such as geological CO2 sequestration, methane bubbling from wetlands, and enhanced carbon recovery.",
    keywords = "Capillary pressure, Irregular pore channel, Lattice Boltzmann simulation, Shape factor, Water retention curve",
    author = "Suh, {Hyoung Suk} and Kang, {Dong Hun} and Jaewon Jang and Kim, {Kwang Yeom} and Yun, {Tae Sup}",
    year = "2017",
    month = "12",
    day = "1",
    doi = "10.1016/j.advwatres.2017.09.025",
    language = "English (US)",
    volume = "110",
    pages = "51--58",
    journal = "Advances in Water Resources",
    issn = "0309-1708",
    publisher = "Elsevier Limited",

    }

    TY - JOUR

    T1 - Capillary pressure at irregularly shaped pore throats

    T2 - Implications for water retention characteristics

    AU - Suh, Hyoung Suk

    AU - Kang, Dong Hun

    AU - Jang, Jaewon

    AU - Kim, Kwang Yeom

    AU - Yun, Tae Sup

    PY - 2017/12/1

    Y1 - 2017/12/1

    N2 - The random shapes of pore throats in geomaterials hinder accurate estimation of capillary pressure, and conventional pore network models that simply use the Young–Laplace equation assuming circular pore throats overestimate the capillary pressure. As a solution to this problem that does not complicate the pore network model or slow its implementation, we propose a new morphological analysis method to correlate the capillary pressure at an irregular pore channel with its cross-sectional geometry using lattice Boltzmann (LB) simulation and Mayer and Stowe–Princen theory. Geometry-based shape factors for pore throats are shown here to correlate strongly with the capillary pressure obtained by LB simulation. Water retention curves obtained by incorporating the morphological calibration into conventional pore network simulation and their correlative scheme agree well with experimental data. The suggested method is relevant to pore-scale processes such as geological CO2 sequestration, methane bubbling from wetlands, and enhanced carbon recovery.

    AB - The random shapes of pore throats in geomaterials hinder accurate estimation of capillary pressure, and conventional pore network models that simply use the Young–Laplace equation assuming circular pore throats overestimate the capillary pressure. As a solution to this problem that does not complicate the pore network model or slow its implementation, we propose a new morphological analysis method to correlate the capillary pressure at an irregular pore channel with its cross-sectional geometry using lattice Boltzmann (LB) simulation and Mayer and Stowe–Princen theory. Geometry-based shape factors for pore throats are shown here to correlate strongly with the capillary pressure obtained by LB simulation. Water retention curves obtained by incorporating the morphological calibration into conventional pore network simulation and their correlative scheme agree well with experimental data. The suggested method is relevant to pore-scale processes such as geological CO2 sequestration, methane bubbling from wetlands, and enhanced carbon recovery.

    KW - Capillary pressure

    KW - Irregular pore channel

    KW - Lattice Boltzmann simulation

    KW - Shape factor

    KW - Water retention curve

    UR - http://www.scopus.com/inward/record.url?scp=85042196538&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=85042196538&partnerID=8YFLogxK

    U2 - 10.1016/j.advwatres.2017.09.025

    DO - 10.1016/j.advwatres.2017.09.025

    M3 - Article

    VL - 110

    SP - 51

    EP - 58

    JO - Advances in Water Resources

    JF - Advances in Water Resources

    SN - 0309-1708

    ER -