Some comparisons between observed wind profiles at Risø and theoretical predictions for flow over inhomogeneous terrain
✍ Scribed by E. L. Petersen; P. A. Taylor
- Publisher
- John Wiley and Sons
- Year
- 1973
- Tongue
- English
- Weight
- 368 KB
- Volume
- 99
- Category
- Article
- ISSN
- 0035-9009
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✦ Synopsis
Abstract
Velocity profiles observed in near neutral conditions at the Risø 125 m tower are presented. The upwind terrain contains, depending on wind direction, either one or two distinct changes in surface roughness.
Comparisons are made between the observed profiles and those predicted using models based on mixing‐length theory, and, in the case of a single roughness change, the turbulent energy equation. Comparisons with the mixing‐length model are moderately good but some features of the observed profiles are missing from the theoretical predictions. The particular turbulent energy equation model used appears to give slightly less accurate predictions than the mixing‐length model.