2016
DOI: 10.1007/s00348-016-2275-9
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Application of short-range dual-Doppler lidars to evaluate the coherence of turbulence

Abstract: Two synchronized continuous wave scanning lidars are used to study the coherence of the along-wind and across-wind velocity components. The goal is to evaluate the potential of the lidar technology for application in wind engineering. The wind lidars were installed on the Lysefjord Bridge during four days in May 2014 to monitor the wind field in the horizontal plane upstream of the bridge deck. Wind records obtained by five sonic anemometers mounted on the West side of the bridge are used as reference data. Si… Show more

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Cited by 27 publications
(29 citation statements)
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“…The along-beam wind coherence estimated using a single pulsed lidar [11][12][13] is only of limited relevance for estimating wind loading on a long-span bridge, the response of which is governed by the lateral coherence of turbulence. Regarding the lateral coherence of the along-wind component, encouraging results were obtained from pilot lidar measurements using limited data sets [6,14]. The estimation of the lateral coherence of the vertical wind component using synchronized wind lidars is, on the other hand, considerably more challenging because of the need to use relatively large elevation angles to properly observe the vertical wind velocity component.…”
Section: Reference Year Number Of Lidars Line-of-sight Range (Km) Quamentioning
confidence: 99%
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“…The along-beam wind coherence estimated using a single pulsed lidar [11][12][13] is only of limited relevance for estimating wind loading on a long-span bridge, the response of which is governed by the lateral coherence of turbulence. Regarding the lateral coherence of the along-wind component, encouraging results were obtained from pilot lidar measurements using limited data sets [6,14]. The estimation of the lateral coherence of the vertical wind component using synchronized wind lidars is, on the other hand, considerably more challenging because of the need to use relatively large elevation angles to properly observe the vertical wind velocity component.…”
Section: Reference Year Number Of Lidars Line-of-sight Range (Km) Quamentioning
confidence: 99%
“…Table 4. Decay coefficients provided by the Handbook N400 [9] for the coherence model in Equation (14). For a large crosswind separation d y , the ratio d y /L (where L is a typical length scale of the turbulence) cannot be considered small and the coherence becomes less than unity at zero frequency [27].…”
Section: The Wind Coherencementioning
confidence: 99%
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