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水电站的油气水系统由于运行操作或事故的产生 ,其管网会产生“死点”或“死网”而使其实际结构发生变化。传统的管网计算方法 ,无法满足仿真对持续求解的要求。该文在考虑流动的阻尼的同时还考虑了流体的可压缩性 ,推导出相关的公式 ,并建立了数学模型 ,提出了计及可压缩性管网的结点法 ,编制了通用的程序从而使时变的管网系统得以持续求解 ,2个算例的计算结果准确 ,为管网计算的自动建模打下了基础
Due to operational operation or accident, hydropower system of hydropower station will have “dead spots” or “dead nets” resulting in changes in its actual structure. The traditional calculation method of pipe network can not meet the requirements of continuous simulation for simulation. In this paper, considering the flow damping, the fluid compressibility is also considered, the relevant formulas are deduced, the mathematical model is established, the node method which accounts for the compressibility pipe network is proposed, the general procedure is established The time-varying system of the pipe network can be solved continuously, and the calculation results of the two examples are accurate, laying a foundation for the automatic modeling of pipe network calculation