【摘要】 由于管壁的摩擦阻力和管内流体速度沿轴向增大 ,多孔集水管内的压力沿轴向减小 .基于水力学原理推导出多孔集水管内各种变量间的无量纲关系式 ,并给出了变孔径多孔集水管水力设计的一种简易方法 .更多还原

【Abstract】 The pressure of the fluid inside the perforated catch-pipe will be decrease ceaselessly along the prolonged axis due to the friction of pipe wall and the increase of velocity of fluid. The dimensionless relationships between the variables inside the perforated catch-pipe have been deduced on the basis of hydraulic principle in this paper. Also the hydraulic design process of the perforated catch-pipe with variable aperture was given.更多还原