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RISPredictions of the Momentum Exchange Coefficient for Flow over Heterogeneous Terrain
Publisher: American Meteorological Society
Abstract: Predictions of the eddy viscosity K are presented for neutrally stable flow in the surface layer after a change in surface roughness. These predictions indicate that the standard techniques for estimating eddy diffusivities ...
Relative importance of Terms in the Turbulent-Energy and Momentum Equations as Applied to the Problem of a Surface Roughness Change
Publisher: American Meteorological Society
Abstract: There are four equations which must he satisfied in a description of the flow, in the two-diinensional case, across a change in surface roughness in the neutrally-stable surface boundary layer: the horizontal and vertical ...
On the Use of Power Laws for Estimates of Wind Power Potential
Publisher: American Meteorological Society
Abstract: The evaluation of wind power potential at a proposed aerogenerator site by extrapolation from measured winds at a reference level is investigated. It is shown that the total mean wind power density is not particularly ...