The scaling properties of the depth of the inner-layer of flow over low hills are studied by means of numerical solution of the equations. Two closure schemes are applied: the mixing-length model and the E-e formulation. It is shown that the scale relation for the inner-layer depth lies between two
On the inner-layer scale height of boundary-layer flow over low hills
โ Scribed by Martin Claussen
- Publisher
- Springer
- Year
- 1988
- Tongue
- English
- Weight
- 199 KB
- Volume
- 44
- Category
- Article
- ISSN
- 0006-8314
No coin nor oath required. For personal study only.
โฆ Synopsis
Jackson and Hunt's (1975)
equation for the depth of the inner layer of flows over low hills does not depend on any closure assumption as contrarily supposed in literature. This equation contains a constant which can arbitrarily be specified. It is suggested that this 'inner-layer constant' should be determined from experimental data. A preliminary check with some data from the Askervein experiment suggests that Jackson and Hunt's equation fits these data almost as web as Jensen's equation provided that fitted 'inner-layer constants' are used.
๐ SIMILAR VOLUMES
A computationally efficient model -the MS3DJH -was used to predict the near-surface wind-speed variations over a given idealised twin hill. Results given compare the model predictions with those of trained meteorologists. Further application of the model to assessment of e.g. power-producing turbine