IDEAS home Printed from https://ideas.repec.org/a/wsi/ijmpcx/v35y2024i06ns0129183124500724.html
   My bibliography  Save this article

Effects of viscosity ratio and surface wettability on viscous fingering instability in rectangular channel

Author

Listed:
  • Akhileshwar Singh

    (Department of Mechanical Engineering, National Institute of Technology Silchar, Assam 788010, India†School of Engineering, Ajeenkya DY Patil University, Pune, Maharashtra 412105, India)

  • Deepak Kumar Singh

    (��School of Engineering, Ajeenkya DY Patil University, Pune, Maharashtra 412105, India)

  • Yogesh Singh

    (Department of Mechanical Engineering, National Institute of Technology Silchar, Assam 788010, India)

  • Krishna Murari Pandey

    (Department of Mechanical Engineering, National Institute of Technology Silchar, Assam 788010, India)

Abstract

This paper explores the impact of viscosity ratio and surface wettability on immiscible viscous fingering instability within a rectangular channel. Numerical investigations are conducted across a range of viscosity ratios (VR) from 0.0009 to 0.5 and wall wettability (θ) from 15° to 150°. The volume of fluid (VOF) model is employed to track the development of finger-shaped instability at the fluid interface. Our results indicate that higher viscosity ratios lead to increased displacement efficiency. Additionally, we find the formation of necking at low VR, which diminishes at higher VR values. The finger-shaped pattern splits into two parts at a wettability of 15°; beyond this threshold, no such splitting occurs. Furthermore, a transition from hydrophilic to superhydrophobic wettability abolishes necking, resulting in enhanced displacement efficiency. Notably, as wettability shifts from hydrophilic to super hydrophobic, instability shifts toward the left side. These findings hold relevance for applications in drug delivery, clinical processes and oil recovery.

Suggested Citation

  • Akhileshwar Singh & Deepak Kumar Singh & Yogesh Singh & Krishna Murari Pandey, 2024. "Effects of viscosity ratio and surface wettability on viscous fingering instability in rectangular channel," International Journal of Modern Physics C (IJMPC), World Scientific Publishing Co. Pte. Ltd., vol. 35(06), pages 1-17, June.
    • Handle: RePEc:wsi:ijmpcx:v:35:y:2024:i:06:n:s0129183124500724
    DOI: 10.1142/S0129183124500724
    as

    Download full text from publisher

    File URL: http://www.worldscientific.com/doi/abs/10.1142/S0129183124500724
    Download Restriction: Access to full text is restricted to subscribers
    File URL: https://libkey.io/10.1142/S0129183124500724?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:wsi:ijmpcx:v:35:y:2024:i:06:n:s0129183124500724. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Tai Tone Lim (email available below). General contact details of provider: http://www.worldscinet.com/ijmpc/ijmpc.shtml .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.