One and two-dimensional, second order turbulence plant canopy flow
models were developed for the purpose of estimating the effect of
coastal vegetation on wind blown sand transport. The computer program
that solves the governing differential equations uses measured leaf
area density profiles and drag coefficients for crop plants similar in
shape and size to the more common coastal vegetation in Florida. (Document has 57 pages.)

Physical effects of vegetation on wind-blown sand in the coastal environments of florida

The full time-dependent two dimensional Navier-Stokes equations are solved using spectral methods to achieve high spatial accuracy and high order time-splitting methods together with conformal mapping methods to allow simulation of flow over steep waves, including general turbulent Reynolds stresses The programs are used to study the properties of laminar and turbulent flow over a flat plate and in various wavy geometries Results are compared with both available theory and experiment For laminar flow, good agreement is achieved For turbulent flow, the agreement is less satisfactory and may be explained by the simplified turbulent modelling use in the calculations

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S. A. Orszag

Papers

Numerical simulation of shear flows over wavy boundaries