Boundary Layers: Surface Effects, Features, Roughness

ORAL · Z24 · ID: 3581588

Presentations

  • Dynamic Response of Flexible Hair-Like Structures to Turbulence

    ORAL

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    Presenters

    • Pratik Suhas Deshpande

      Embry-Riddle Aeronautical University, Daytona Beach

    Authors

    • Pratik Suhas Deshpande

      Embry-Riddle Aeronautical University, Daytona Beach

    • Greeshma Daniel

      Embry-Riddle Aeronautical University, Embry-Riddle Aeronautical University, Daytona Beach

    • Graham Holt

      Embry-Riddle Aeronautical University, Daytona Beach

    • Ebenezer P Gnanamanickam

      Embry-Riddle Aeronautical University, Daytona Beach, Daytona Beach campus

    View abstract →

  • Compound impacts of PV array configurations on boundary layer flow generated over e-type roughness elements

    ORAL

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    Presenters

    • Yamilet R Rendon-Hernandez

      Portland State University

    Authors

    • Yamilet R Rendon-Hernandez

      Portland State University

    • Emma R Compton

      Portland State University

    • Katie N Taylor

      Portland State University

    • Ondrej Fercak

      Portland State University

    • Sarah E Smith

      Portland State University

    • Zein Ahmad Sadek

      Portland State University

    • Abdelhalim Abdeldayem

      Katholieke University Leuven

    • Marc Calaf

      University of Utah

    • Raúl Bayoán B Cal

      Portland State University

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  • Direct Numerical Simulation of High-Speed Turbulent Flows over Complex Rough Surfaces

    ORAL

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    Publication: Modesti D, Sathyanarayana S, Salvadore F, Bernardini M. Direct numerical simulation of supersonic turbulent flows over rough surfaces. Journal of Fluid Mechanics. 2022;942:A44. doi:10.1017/jfm.2022.393

    Presenters

    • Alessandro Ceci

      Gran Sasso Science Institute

    Authors

    • Alessandro Ceci

      Gran Sasso Science Institute

    • Davide Modesti

      Gran Sasso Science Institute

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  • On the Relationship between Manning’s Roughness Coefficient and Relative Roughness

    ORAL

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    Publication: References
    1. Nikuradse, J. (1933). Laws of Flow in Rough Pipes. NACA Technical Memorandum 1292.
    2. Darcy, H. (1857). Les fontaines publiques de la ville de Dijon. Dalmont, Paris.
    3. Bazin, H. (1865). Expériences nouvelles sur l'écoulement de l'eau. Imprimerie Nationale.
    4. Manning, R. (1891). On the flow of water in open channels and pipes. Transactions of the Institution of Civil Engineers of Ireland.
    5. Jimenez, J. (2004). Turbulent Flows Over Rough Walls. Annu. Rev. Fluid Mech., 36, 173–196.
    6. Moody, L.F. (1944). Friction Factors for Pipe Flow. Transactions of the ASME, 66(8), 671–684.
    7. Colebrook, C.F. (1939). Turbulent flow in pipes, with particular reference to the transition region between smooth and rough pipe laws. Journal of the Institution of Civil Engineers, 11(4), 133–156.
    8. Townsend, A.A. (1976). The Structure of Turbulent Shear Flow. 2nd Edition. Cambridge University Press.
    9. Clauser, F.H. (1954). Turbulent boundary layers in adverse pressure gradients. Journal of the Aeronautical Sciences, 21(2), 91–108.
    10. Schultz, M.P. & Flack, K.A. (2007). The rough-wall turbulent boundary layer from the hydraulically smooth to the fully rough regime. Journal of Fluid Mechanics, 580, 381–405.
    11. Chan, L., MacDonald, M., Chung, D., Hutchins, N., & Ooi, A. (2015). Direct numerical simulation of a rough-wall turbulent channel flow. Journal of Fluid Mechanics, 771, 743–777.
    12. Zhao, J., & Hu, H. (2021). A review on turbulent flow over rough surfaces: Fundamentals and theories. Journal of Hydrodynamics, 33(1), 1–17. https://doi.org/10.1007/s42241-021-0006-5

    Presenters

    • Faisal A Alsultan

      Colorado State University

    Authors

    • Faisal A Alsultan

      Colorado State University

    • Subhas Karan Venayagamoorthy

      Colorado State University , Missouri University of Science and Technology, Colorado State University, Missouri University of Science and Technology

    View abstract →