摘要
本文应用紊流力学中圆管紊动微分方程式．经过严密的数学推导，得到了一个新的圆管轴向紊流时均流速分布公式。这些公式由于去掉了普朗特关于粘滞应力较小及总应力沿管径不变的假设，因而理论上比普朗特的圆管紊流公式更为合理。本文也研究了两种粘性流体在圆管中的顶替规律．文中也得到了紊流流动与顶替时倾斜圆管两端压降的计算公式。
In this paper. using the turbulence differential equations in turbulent mechanics.through accurate mathematical deduction.this paper obtains a new time-averaged velocity distribution formula for the axial turbulent flow in pipe. Because Prandtl's two hypotheses the viscous stress is less and the total stress is not variable along the radial are canceled in these formulas.the formulas are theoretically more rational than Prandtl's turbulent formulas in pipe.This puper also researches the displacement laws of two viscous fluids in pipe. The pressure fall calculating formulas at the two ends of inclined Pipe for turbulent flow and displacement have also been presented.
