In the present study, a water transmission pipeline under steady conditions is modeled followed by examining the transient flow created by the failure of pumps in the pipeline. This pipeline is 31 km from the water transmission pipeline of Kerman, Iran. The software analysis results were compared with those of a numerical model for a laboratory test to validate transient flow modeling. While transient flows are created by pump failure, various areas of the water transmission pipelines will be affected by the transient waves produced. Long water transmission pipelines, usually large in diameter and flow rate, will pose problems in the negative pressure phase. The negative pressure causes threatening problems like water column separation and cavitation. The results indicated that using equipment like air valves when the pumps fail alone does not have the appropriate efficiency in eliminating the hazards in the water transmission pipelines. More examination showed that installing equipment like water flow feed and hydropneumatic tanks along the pipeline length in the right places prevents the negative pressure created and the pipeline risk significantly reduces.

在本研究中，对稳态条件下的输水管道进行建模，然后检查管道中泵故障造成的瞬态流。该管道距伊朗克尔曼输水管道31公里。将软件分析结果与用于实验室测试的数值模型的结果进行比较，以验证瞬态流建模。虽然泵故障会产生瞬态流，但输水管道的各个区域都会受到产生的瞬态波的影响。长输水管道，通常口径大、流量大，在负压阶段就会出现问题。负压会导致水柱分离和气蚀等威胁性问题。结果表明，当泵单独发生故障时，使用气阀等设备在消除输水管道中的危害方面没有适当的效率。更多的检查表明，在正确的位置沿管道长度安装水流进料和液压气动罐等设备可以防止产生负压，管道风险显着降低。