IDEAS home Printed from https://ideas.repec.org/a/gam/jagris/v15y2025i11p1214-d1670011.html
   My bibliography  Save this article

Critical Flow Velocity Analysis of Multi-Span Viscoelastic Micro-Bending Irrigation Pipelines

Author

Listed:
  • Sihao Wu

    (Rubber Research Institute, Chinese Academy of Tropical Agricultural Science, Haikou 570100, China)

  • Bo Fan

    (Rubber Research Institute, Chinese Academy of Tropical Agricultural Science, Haikou 570100, China)

  • Jianhua Cao

    (Rubber Research Institute, Chinese Academy of Tropical Agricultural Science, Haikou 570100, China)

  • Suwei Xiao

    (Rubber Research Institute, Chinese Academy of Tropical Agricultural Science, Haikou 570100, China)

  • Yuhe Cao

    (College of Construction Engineering, Jilin University, Changchun 130026, China)

Abstract

Irrigation pipelines are critical agricultural hydraulic facilities that often develop minor bending defects due to ground settlement or improper installation. This study employs Lagrange equations for non-material volumes and the Absolute Nodal Coordinate Formulation (ANCF) to model the multi-span viscoelastic micro-bending irrigation pipelines, investigating the influence of micro-bending defects on critical flow velocity. The material parameters of the pipeline wall are determined via uniaxial tensile tests, and the effectiveness of the proposed model is validated through comparison with degraded models and field tests. Further numerical analysis demonstrates that modifying the micro-bend defect of the pipeline from a parabolic to a sinusoidal shape yields a 13.9% enhancement in critical flow velocity. This improvement is particularly significant for irrigation projects with limited pipe material options, tight flow design margins, and low economic returns.

Suggested Citation

  • Sihao Wu & Bo Fan & Jianhua Cao & Suwei Xiao & Yuhe Cao, 2025. "Critical Flow Velocity Analysis of Multi-Span Viscoelastic Micro-Bending Irrigation Pipelines," Agriculture, MDPI, vol. 15(11), pages 1-16, June.
    • Handle: RePEc:gam:jagris:v:15:y:2025:i:11:p:1214-:d:1670011
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/2077-0472/15/11/1214/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/2077-0472/15/11/1214/
    Download Restriction: no
    ---><---

    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:gam:jagris:v:15:y:2025:i:11:p:1214-:d:1670011. 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: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    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.