论文部分内容阅读
We conduct simulation study on the typical influencing factors for negative pressure wave in liquid pipeline leakage.We first analyse the liquid pipeline leakage detection based on negative pressure wave method and obtain the essential simulation parameters.Then based on the physical model of pipeline and by introducing leakage boundary condition,we simulate the variation of pressure and flow rate in pipeline after leakage,the influence of leakage scale and leakage position on the pressure and flow rate in the pipeline.The results show that the leakage scale mainly influences the amplitude of negative pressure wave,and that the leakage position influences both the amplitude and the shape of the curves of negative pressure wave.
We conduct simulation study on the typical influencing factors for negative pressure wave in liquid pipeline leakage. We first analyze the liquid pipeline leakage detection based on negative pressure wave method and obtain the essential simulation parameters. Based on the physical model of pipeline and by introducing leakage boundary condition, we simulate the variation of pressure and flow rate in pipeline after leakage, the influence of leakage scale and leakage position on the pressure and flow rate in the pipeline. The results show that the leakage scale mainly influences the amplitude of negative pressure wave, and that the leakage positioncts both the amplitude and the shape of the curves of negative pressure wave.