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1·In this paper, the variations in the horizontal and vertical velocities over 6 different transverse dune models are investigated in a wind tunnel by applying the particle image velocimetry (PIV).

通过风洞实验的方法，针对不同形态的6组横向沙丘模型，采用粒子图像测速系统，测量了模型沙丘周围气流水平速度和垂直速度的变化规律。