The traditional quasi-steady friction models are proved to be inaccurate in transient pipe flow because they underestimate frictionlosses in transients.
在液体管道瞬变流计算中，传统的拟恒定摩阻模型不能准确描述瞬变流的真实物理现象。
2
This paper gives, from the energy equation for rapidly varied flow, the equations for the calculation of the curve of equal cavitation number in consideration of frictionlosses.
本文在考虑水流阻力的情况下，提出计算等空化数曲线的方程组，并给出电算程序。
3
Pipe friction is the resistance to flow caused by the pipe. As a general principle, it is better to use the largest practical pipe size to avoid losses in pump performance.