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HUANG Dong-mei, ZHU Le-dong, DING Quan-shun. Experimental research on vertical coherence function of wind velocities in atmospheric boundary layer wind field[J]. Journal of Experiments in Fluid Mechanics, 2009, 23(4): 34-40. DOI: 10.3969/j.issn.1672-9897.2009.04.007
Citation: HUANG Dong-mei, ZHU Le-dong, DING Quan-shun. Experimental research on vertical coherence function of wind velocities in atmospheric boundary layer wind field[J]. Journal of Experiments in Fluid Mechanics, 2009, 23(4): 34-40. DOI: 10.3969/j.issn.1672-9897.2009.04.007
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Experimental research on vertical coherence function of wind velocities in atmospheric boundary layer wind field

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  • Atmospheric boundary layer flow field was simulated in TJ-2 wind tunnel by using the passive turbulence devices composed of spires,grid and roughness components.The wind filed parameters,including mean wind velocities profile,turbulence intensity profiles,turbulence integral scale,wind spectrum and so on,were measured.The vertical spatial correlation curves of wind velocities were analyzed on focus.Aiming at the phenomenon of low frequency "turns around"in the vertical spatial correlation curves of wind velocities ,the revised exponential decay functions were put forward to fit it,which improves the shortage of traditional simplified decay exponential function in low frequency.The result shows the revised vertical spatial correlation functions of wind velocities proposed by the author are more precise.
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