GSTDTAP  > 地球科学
DOI10.5194/acp-19-2713-2019
Characterization of flow recirculation zones at the Perdigao site using multi-lidar measurements
Menke, Robert1; Vasiljevic, Nikola1; Mann, Jakob1; Lundquist, Julie K.2,3
2019-03-01
发表期刊ATMOSPHERIC CHEMISTRY AND PHYSICS
ISSN1680-7316
EISSN1680-7324
出版年2019
卷号19期号:4页码:2713-2723
文章类型Article
语种英语
国家Denmark; USA
英文摘要

Because flow recirculation can generate significant amounts of turbulence, it can impact the success of wind energy projects. This study uses unique Doppler lidar observations to quantify occurrences of flow recirculation on lee sides of ridges. An extensive dataset of observations of flow over complex terrain is available from the Perdigao 2017 field campaign over a period of 3 months. The campaign site was selected because of the unique terrain feature of two nearly parallel ridges with a valley-to-ridge-top height difference of about 200m and a ridge-to-ridge distance of 1.4 km.


Six scanning Doppler lidars probed the flow field in several vertical planes orthogonal to the ridges using range-height indicator scans. With this lidar setup, we achieved vertical scans of the recirculation zone at three positions along two parallel ridges. We construct a method to identify flow recirculation zones in the scans, as well as define characteristics of these zones. According to our data analysis, flow recirculation, with reverse flow wind speeds greater than 0.5 m s(-1), occurs over 50% of the time when the wind direction is perpendicular to the direction of the ridges. Atmospheric conditions, such as atmospheric stability and wind speed, affect the occurrence of flow recirculation. Flow recirculation occurs more frequently during periods with wind speeds above 8 m s(-1). Recirculation within the valley affects the mean wind and turbulence fields at turbine heights on the downwind ridge in magnitudes significant for wind resource assessment.


领域地球科学
收录类别SCI-E
WOS记录号WOS:000460118000002
WOS关键词WIND TURBINE ; COMPLEX TERRAIN ; SIMULATION
WOS类目Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/22803
专题地球科学
作者单位1.Tech Univ Denmark, DTU Wind Energy, Frederiksborgvej 399,Bldg 118, DK-4000 Roskilde, Denmark;
2.Univ Colorado, Dept Atmospher & Ocean Sci, Boulder, CO 80309 USA;
3.Natl Renewable Energy Lab, Golden, CO USA
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Menke, Robert,Vasiljevic, Nikola,Mann, Jakob,et al. Characterization of flow recirculation zones at the Perdigao site using multi-lidar measurements[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2019,19(4):2713-2723.
APA Menke, Robert,Vasiljevic, Nikola,Mann, Jakob,&Lundquist, Julie K..(2019).Characterization of flow recirculation zones at the Perdigao site using multi-lidar measurements.ATMOSPHERIC CHEMISTRY AND PHYSICS,19(4),2713-2723.
MLA Menke, Robert,et al."Characterization of flow recirculation zones at the Perdigao site using multi-lidar measurements".ATMOSPHERIC CHEMISTRY AND PHYSICS 19.4(2019):2713-2723.
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