局部水头损失实验研究

摘要

局部水头损失实验用来测量流体在经过局部管件时能量损失大小.实验中,若操作不当,会造成较大误差.操作中常犯的错误无非有测压管液面未调平、测压管液面不稳定开始读数等,这文章针对这些不当操作,分析研究操作不当对实验数据的影响.通过数据的比较,可以了解哪些错误操作对实验影响较大,不能忽略.%Local head loss experiment is used to measure the energy loss when the liquid passes the local parts of the pipe. In the experiment, there are big errors because of wrong operations. There are several types of wrong operations, such as the weighing scale does not keep balance, reading the data before the piezometers are fixed, and so on. This paper is aimed at these wrong operations, analysing the influence caused by the wrong operations. By comparison, we get to know that some wrong operation's influence is huge, and cann't be ignored. What we can do is to try our best to avoid the wrong operations.