非恒定管流水头损失规律试验研究

EXPERIMENTAL RESEARCH OF HEAD LOSS REGULARITY IN UNSTEADY PIPE FLOWS

本文进行了惯性水头为负且其绝对值很小时,非恒定管流沿程水头损失试验研究。试验结果表明,非恒定管流沿程水头损失与恒定管流沿程水头损失相似,但前者略大,两者差值较惯性水头大二个数量级。

In this paper, frictional head loss are studied experimentally in unsteady pipe flows, in the case of negtive inertia head the absolute value of which is very low. The research presents, frictional head loss is simular both in unsteady pipe flows and in steady pipe flows. But in unsteady pipe flows the head loss is biggerd, and at the same time the head loss difference in both cases is two number grade bigger than inertia head.