Direct Numerical Simulation of Multiphase flow over Realistic Superhydrophobic Surfaces

ORAL

Abstract

Direct numerical simulations are performed using the volume of fluid methodology, for turbulent channel flow of water over a realistic superhydrophobic surface, which traps air. The surface is obtained from scanned data of the real sprayed surface. Multiphase laminar Couette flow and turbulent channel cases are examined. Drag reduction for different interface heights are shown, and the effect of turbulence on multiphase flow over rough surfaces is discussed.

*This work is supported by the Office of Naval Research.

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Authors

  • Karim Alame

    • University of Minnesota, Twin Cities
    • University of Minnesota

  • Krishnan Mahesh

    • University of Minnesota, Twin Cities
    • University of Minnesota - Twin Cities
    • Univ of Minnesota - Twin Cities
    • University of Minnesota
    • Univ of Minn - Minneapolis