A Note on Two-Equation Closure Modelling of Canopy Flow

    Research output: Contribution to journalJournal articleResearchpeer-review


    The note presents a rational approach to modelling the source/sink due to vegetation or buoyancy effects that appear in the turbulent kinetic energy, E, equation and a supplementary equation for a length-scale determining variable, φ, when two-equation closure is applied to canopy and atmospheric boundary-layer flows. The approach implements only standard model coefficients C φ1 and C φ2 in the production and destruction terms of the φ equation, respectively. Numerical tests illustrate the practical applicability of the method, where, for example, simulations with the E–ω model (where is the specific dissipation and is the dissipation rate of E) properly reproduce both the surface-layer wind profile estimated from the Monin-Obukhov similarity theory and the mixing-height evolution observed above forested terrain in Southern Finland.
    Original languageEnglish
    JournalBoundary-Layer Meteorology
    Issue number3
    Pages (from-to)423-435
    Publication statusPublished - 2009


    • Meteorology
    • Wind Energy

    Fingerprint Dive into the research topics of 'A Note on Two-Equation Closure Modelling of Canopy Flow'. Together they form a unique fingerprint.

    Cite this