摘要
利用普朗特的混合长度理论及由此导出的圆管紊流速度分布公式，再利用圆管层流速度分布公式及由本文实验数据拟合的交替系数公式，推出了圆管流转捩过程中速度分市公式。然后，利用实验数据检验了该公式，其吻合程度满足工程要求。
Using Prandtl's mixing length theory and turbulent flow velocity distribution formula inpipe derived from the theory,again using laminar flow velocity distribution formula in pipe,andthe intermittent factor formula fitted from our experimental data,the velocity distributionformulas in tlansition in pipe flow have been proceed. Then,using the experimental data,theformulas have been examined, it is found that the formulas are identical with the experimentdata.
