A simple and efficient procedure for the numerical simulation of wind fields in complex terrain
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- 作者：Massimiliano Burlando ; Luigi Carassale ; Emilia Georgieva ; Corrado F. Ratto and Giovanni Solari
- 关键词：Boundary ; layer flow simulation ; Complex terrain ; Local log law ; of ; the ; wall ; Monte Carlo methods ; Proper Orthogonal Decomposition ; Turbulence simulation
- 刊名：Boundary-Layer Meteorology
- 出版年：2007
- 出版时间：December, 2007
- 年：2007
- 卷：125
- 期：3
- 页码：417-439
- 全文大小：1,028 KB
- 刊物类别：Earth and Environmental Science
- 刊物主题：Earth sciences
Meteorology and Climatology
Atmospheric Protection, Air Quality Control and Air Pollution - 出版者：Springer Netherlands
- ISSN：1573-1472
文摘
In spite of recent progress in the prognostic numerical simulation of the atmospheric boundary layer, the explicit simulation of turbulent flows in actual complex terrain is generally still very complicated and time consuming for many environmental applications. In an attempt to develop simpler and more efficient application oriented techniques, although less refined, we propose a multi-step procedure for simulating wind fields. Once obtained the necessary meteorological input, the mass-consistent modelling technique is used to perform high-resolution mean wind flow simulations taking into account recent developments in the atmospheric boundary-layer theory. Besides, a procedure based on a generalisation of the local logarithmic law-of-the-wall over complex terrain is used to estimate the effective parameters characterising the simulated wind profiles. Turbulence intensities and spectral properties are then calculated through the estimated effective parameters, in particular through the effective friction velocity parameter. Finally, time series of the instantaneous velocity field are simulated by the Monte Carlo technique. Two applications of the proposed approach are discussed briefly: the first one is related to a coastal area in southern Italy (the Messina Straits), where the construction of the world’s longest central span bridge is being planned; the second one corresponds to the flow in a mountainous area in northern Italy (the Albenga Airport).