Time average velocity

Distribution of time average velocity in wave-current combined flow

波浪和水流共同作用下水流时均流速分布

The time average velocity distribution of the flows under different Reynold numbers were simulated and the time average characteristics of the flows at different states in the divergent segment were analyzed .

针对不同雷诺数下扩散段内的水流进行数值模拟，得到了各雷诺数流动时的时均速度场，分析了不同流态下扩散段内恒定有压扩散流时均流动特性。

The turbulent flow of plastic fluids in smooth pipes has been studied by using the stochastic theory of turbulent flow , and the formulas have been presented for evaluating the time average velocity in the whole section of pipes , mean velocity and friction factor .

本文应用随机湍流模型对塑性流体在光滑圆管内的湍流流动规律进行了研究，得到了包括近壁区域在内的断面时均速度分布和平均速度、沿程阻力系数的计算公式。

The turbulent flow in open channel is tested with laser-Doppler anemometer , in which the longitudinal time average velocity and fluctuating velocity of turbulent flow in open channel under the conditions of the sudden changes of roughnesses at different water depths are measured .

通过激光测速仪，对壁面糙率突变时的明渠紊流进行试验，测量了糙率突变不同水深情况下明渠紊流的纵向时均流速和脉动流速。

The calculated time average particle velocity and concentration profiles in spouted bed were in good agreement with the experimental results in the literature .

模拟计算得到的时间平均颗粒速度和浓度等分布与文献上实验数据进行比较，数值模拟结果与实验结果吻合的较好。

The optimum method for determining the source location , origin time and average regional wave velocity

确定震源位置，发震时刻及区域平均波速的最优化方法