(LiDAR関連)独・スペクトラ社/Revolutionary 3D wind turbulence simulation with real world data from LIDAR system

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A common way of designing a new large building is to make a scale model and test it in a wind tunnel. This has been a recognised test for over 50 years but it is known to underestimate the peak loads, so correction factors are applied to provide a safety margin. Another drawback is that the wind just comes from one direction at a time whereas in the real world, gusts and the large eddies can fluctuate from many different directions at once. A Danish company, Vind-Vind, is developing a new turbulence model to capture the effects of wind on a building in natural conditions. This modelling uses real world data to enhance its accuracy, gathered with a LIDAR system using 10 ns pulses. Particles in the air reflect the laser, the changes in the returned light due to the Doppler effect are analysed using the latest flagship product of Spectrum Instrumentation, the ultrafast M5i.3321-x16 digitizer card.