International Journal of Fluid Mechanics & Thermal Sciences

Volume 11, Issue 2, June 2025

  • Research Article

    Relationship Between Water Surface Elevation and Mean Water Depth for a Partially Wetted Rectangular Grid Cell in Numerical Simulations of Shallow Water Flows with Complex Topography

    Kwang Hyok Ri, Myong Chol Ri*, Kwang Chol Jon, Ji Song Jong, Jin Hyok Choe

    Issue: Volume 11, Issue 2, June 2025
    Pages: 14-19
    Received: 21 May 2025
    Accepted: 16 June 2025
    Published: 10 July 2025
    DOI: 10.11648/j.ijfmts.20251102.11
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    Abstract: We propose a relationship between the water surface elevation and the mean water depth for partially wetted rectangular grid cells in the numerical simulation of shallow water flow with complex topography, and apply it to the numerical simulation of shallow water flow to verify the correctness of the relationship. Many natural terrains have complic... Show More
  • Research Article

    Analysis of Turbulent Natural Convection of Heat Transfer with Localized Heating and Cooling on Opposite Surface of a Vertical Cylinder

    Omariba Geofrey Ong'era*, Johana Kibet Sigey, Jeconia Abonyo Okelo, Stephen Mbugua Karanja

    Issue: Volume 11, Issue 2, June 2025
    Pages: 20-32
    Received: 4 June 2025
    Accepted: 16 June 2025
    Published: 10 July 2025
    DOI: 10.11648/j.ijfmts.20251102.12
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    Abstract: Turbulent flow results from the erratic change in velocity and direction of a fluid flow over time. Hence producing irregular mixing and increased transport processes during the flow. Especially for those relying on passive heat transfer methods, designing efficient thermal energy systems requires an awareness of turbulent natural convection. This ... Show More