公布 中文名称：脉动流速 英文名称：fluctuating velocity 定义：紊流瞬时流速与其时间平均值之差。 应用学科： 水利科技（一级学科）；水力学、河流动力学、海岸动力学（二级学科）；水力学（水利）（二级学科） 点击加
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此方程将脉动流速分解为三个组成部分，并且据此导出脉动应力分解方程。
According to the above work, the Renolds-stress is resolved into serval parts, and the composed equation of Renolds-stress is derived.
脉动流速数据的采集到应用，由于各种干扰因素的存在，一般都需要将测量数据进行预处理。
Generally, fluctuating velocity data should be disposed for it was disturbed by a lot of factors during data acquisition.
表达式显示出的扩散系数随垂向脉动流速均方根值和颗粒粒径、密度而变化的趋势与实验结果吻合。
Results of homogeneous turbulence experiments show that the diffusion coefficient varies with the size and density of sediment particles, just as indicated by the theoretical analysis.
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