Rough Wall Modification of Two-Layer k−ε

DOI PDF 4 Citations
  • P. A. Durbin
    Mechanical Engineering Department, Stanford University, Stanford, CA 94305-3030
  • G. Medic
    Mechanical Engineering Department, Stanford University, Stanford, CA 94305-3030
  • J.-M. Seo
    Mechanical Engineering Department, Stanford University, Stanford, CA 94305-3030
  • J. K. Eaton
    Mechanical Engineering Department, Stanford University, Stanford, CA 94305-3030
  • S. Song
    Mechanical Engineering Department, Stanford University, Stanford, CA 94305-3030

Description

<jats:p>A formulation is developed to apply the two-layer k−ε model to rough surfaces. The approach involves modifying the lν formula and the boundary condition on k. A hydrodynamic roughness length is introduced and related to the geometrical roughness through a calibration procedure. An experiment has been conducted to test the model. It provides data on flow over a ramp with and without surface roughness.</jats:p>

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