The nature and frequency of low wind speed conditions
| Autor: | I.G. Lines, D.M. Deaves |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
Flammable liquid
Meteorology Renewable Energy Sustainability and the Environment Mechanical Engineering Sample (statistics) Stability (probability) Wind speed chemistry.chemical_compound Wind profile power law chemistry Anemometer Range (aeronautics) Environmental science Dispersion (water waves) Civil and Structural Engineering |
| Zdroj: | Journal of Wind Engineering and Industrial Aerodynamics. 73:1-29 |
| ISSN: | 0167-6105 |
| DOI: | 10.1016/s0167-6105(97)00278-x |
| Popis: | Risk assessments for hazardous installations, in which loss of inventory could result in offsite risk, will generally require the modelling of the dispersion of toxic or flammable gases for several realistic scenarios in a range of representative wind conditions. Since hazard ranges — the distances affected by hazardous gas clouds — are usually greater for low wind speeds, it is necessary to be able to model such conditions in an appropriate manner, and also to understand the nature and frequency of these low wind speed conditions. This paper presents the results of part of a study which considered the whole problem of using low wind speed conditions in risk assessments. Its particular focus is to provide an understanding of atmospheric conditions in low wind speeds and to assess some sample meteorological data. These data have included both standard data, available from many Meteorological Office sites throughout the UK, and also some more accurate data, obtained using sonic anemometers or lightweight cups. Results are presented in terms of wind speed frequency estimates down to very low values, and also the dependence of such conditions on time of day, stability and averaging time, and the persistence of both wind speed and direction over time periods from ten minutes to three hours. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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