![fluid app vs coherence fluid app vs coherence](https://media.springernature.com/lw685/springer-static/image/art%3A10.1007%2Fs41465-020-00202-3/MediaObjects/41465_2020_202_Fig3_HTML.png)
![fluid app vs coherence fluid app vs coherence](https://miro.medium.com/max/1400/0*ytM12bInFfrldBmL.gif)
Iungo GV, Wu YT, Porté-Agel F (2013) Field measurements of wind turbine wakes with lidars. Hui M, Larsen A, Xiang H (2009b) Wind turbulence characteristics study at the Stonecutters Bridge site: Part I:mean wind and turbulence intensities. Hui M, Larsen A, Xiang H (2009a) Wind turbulence characteristics study at the Stonecutters Bridge site: Part II: wind power spectra, integral length scales and coherences. Hjorth-Hansen E, Jakobsen A, Strømmen E (1992) Wind buffeting of a rectangular box girder bridge. ESDU Internationalįriedrich K, Lundquist JK, Aitken M, Kalina EA, Marshall RA (2012) Stability and turbulence in the atmospheric boundary layer: a comparison of remote sensing and tower observations. doi: 10.1680/iicep.1962.10876ĮSDU 86010 (2001) Characteristics of atmospheric turbulence near the ground part III: variations in space and time for strong winds (neutral atmosphere). doi: 10.1002/qj.49708737208ĭavenport AG (1962) The response of slender, line-like structures to a gusty wind. doi: 10.1016/j.egypro.2016.09.217ĭavenport AG (1961) The spectrum of horizontal gustiness near the ground in high winds. doi: 10.1016/j.engstruct.2016.09.060Ĭheynet E, Bogunović Jakobsen J, Svardal B, Reuder J, Kumer V (2016) Wind coherence measurement by a single pulsed Doppler wind lidar. doi: 10.1007/s1054-1Ĭheynet E, Bogunović Jakobsen J, Snæbjörnsson J (2016) Buffeting response of a suspension bridge in complex terrain. doi: 10.1109/TAU.1973.1162496Ĭhen J, Hui M, Xu Y (2007) A comparative study of stationary and non-stationary wind models using field measurements. IEEE Trans Electroacoust Audio 21(4):337–344. doi: 10.1175/JAM2391.1Ĭarter G, Knapp C, Nuttall AH (1973) Estimation of the magnitude-squared coherence function via overlapped fast Fourier transform processing. Wiley, HobokenĬalhoun R, Heap R, Princevac M, Newsom R, Fernando H, Ligon D (2006) Virtual towers using coherent Doppler lidar during the Joint Urban 2003 dispersion experiment.
#Fluid app vs coherence series#
doi: 10.1016/j.jneumeth.2006.03.011īendat J, Piersol A (2011) Random data: analysis and measurement procedures Wiley series in probability and statistics. doi: 10.1002/met.244īeck TW, Housh TJ, Weir JP, Cramer JT, Vardaxis V, Johnson GO, Coburn JW, Malek MH, Mielke M (2006) An examination of the runs test, reverse arrangements test, and modified reverse arrangements test for assessing surface EMG signal stationarity. doi: 10.1029/2012JA018216īarkwith A, Collier CG (2011) Lidar observations of flow variability over complex terrain. doi: 10.1017/S002211207200045XĪryan H, Boynton RJ, Walker SN (2013) Analysis of trends between solar wind velocity and energetic electron fluxes at geostationary orbit using the reverse arrangement test. doi: 10.1063/1.3697728Īntonia RA, Luxton RE (1972) The response of a turbulent boundary layer to a step change in surface roughness. On the other hand, the spatial averaging effect does not seem to have any significant effect on the coherence.Īngelou N, Mann J, Sjöholm M, Courtney M (2012) Direct measurement of the spectral transfer function of a laser based anemometer. The WindScanners are observed to slightly overestimate the integral length scales, which could not be explained by the laser beam averaging effect alone. For increasing wavenumbers, larger discrepancies are, however, noticeable between the measured coherence and the theoretical predictions.
![fluid app vs coherence fluid app vs coherence](https://edukasinewss.com/wp-content/uploads/2021/02/reface-min-2.png)
The analytical predictions agree rather well with the measured coherence for the along-wind component. The root-coherence of turbulence is compared to theoretical models. A four-parameter decaying exponential function has been fitted to the measured co-coherence, and a good agreement is observed between data obtained by the sonic anemometers and the lidars. Single- and two-point statistics of wind turbulence are studied, with special emphasis on the root-coherence and the co-coherence of turbulence. Wind records obtained by five sonic anemometers mounted on the West side of the bridge are used as reference data. 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. The goal is to evaluate the potential of the lidar technology for application in wind engineering. Two synchronized continuous wave scanning lidars are used to study the coherence of the along-wind and across-wind velocity components.