System of numeric models for sand particle transport by wind

摘要: A system of experimental and mathematical models was developed from data on grain particle transport, collected a series experiments in large-scale wind tunnel, principles. The model derived FORTRAN program using the observed data. As first attempt, it took into account role played by following factors transport: grain-size distribution, mean diameter size class, die effective surface particles, mobility, friction velocity, threshold velocity. comparison between predicted results indicated that able to predict transport rate particles different classes over time with good reliability. used conjunction could be employed calculate variation size, approximate fluid accumulated erosion time. should applied caution natural conditions because assumption dry, loose, large-roughness-free aerodynamically dominant fluid. models, except for were accurate, given precise