pressure node

The conventional technique of simulation on gas pipeline network claims that every node of the network should be allocated a known parameter ( pressure or flow). Aim at this deficiency, the corresponding settle methods were proposed in this paper.

传统的管网仿真方法要求每个节点都需分配一个已知参数（节点压力或流量），针对这一缺陷，提出了相应的解决办法。

The nonlinear relation between node pressure head of the pipe network and water capacity and pressure of water supply pump station was deduced by SVM.

利用支持向量机推求管网节点水头和供水泵站供水量、供水压力的非线性关系。

The paper approve this network structure can improve the efficiency, reduce the network congestion and decompress the pressure on the main node.

通过理论阐述证明了该网络结构可以有效的提高网络利用率，减少网络拥塞，减轻一些主要节点的服务压力。

The method can calculate flux assignment and node pressure of heating network under different conditions by counting non-linear equation group according to network inherent parameter, solve the calculation problem of asymmetric network as the result of fault and remedy the shortcoming of the method for planar network.

该方法可根据网络的固有参数通过求解非线性方程组给出不同工况下管网的流量分配和节点压力，还可解决故障导致的管网水力不对称问题，从而弥补了平面网方法的不足。

The Newton iteration method is used to solve the economic pressure on the unknown node, so as to calculate the economic head loss and economic pipe diameter of each section, and economic head of second-stage pump station.

采用牛顿迭代法来求解各未知节点的经济水压，进而得出各管段的经济水头损失、经济管径和水源二级泵站的经济扬程。