The average shear rate obtained with this method is a more reasonable measurement of the average shear history of fluid in turbulent pipe flow.
对于湍流，按本方法计算的平均剪切率能合理地度量流体的平均剪切历史。
The factors on the turbulent entrance length were analysed, based on the variable Recr, a new empirical formula was developed for the turbulent entrance length in a pipe flow.
详细分析了管流湍流人口长度的影响因素，提出以临界雷诺数为基础变量的新湍流入口长度经验公式。
Then, based on that, the turbulent motional differential equation for a pipe is made out From that, the turbulent flow and displacement laws for non-Newtonian fluids in a pipe have also been studied.
在此基础上，导出了适用于圆管的运动微分方程序。据此研究了非牛顿流体圆管紊流流场及两种非牛顿流体在圆管中的顶替规律。
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