ON TURBULENCE CLOSURE CONSTANTS FOR ATMOSPHERIC BOUNDARY-LAYER MODELING - NEUTRAL STRATIFICATION

Constant sets for several turbulence closure models, based on data for the atmospheric boundary layer, are proposed. They differ from those currently used in engineering situations but are self-consistent and t uned to represent atmospheric boundary-layer turbulence. The proposed constant sets are tested in a simple, one-dimensional, neutrally-strat ified planetary boundary-layer flow over a horizontally homogeneous an d aerodynamically rough flat surface. Comparisons of model results wit h similarity theory and large-eddy simulation show promise for improvi ng boundary-layer predictions.