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自来水配水管道环流网的平差问题是确定环网管段的流量分配及相应的水头损失的。环网水力计算的数学问题是解m-1个线性方程(∑Q=0)与n个非线性方程的问题(∑h=∑SQ~2=0)。这里方程式数量与欲求的管段流量的数量相同。从数学观点来看,具有可行解,但要得出精确解是有困难的。其方法不外乎以下三种:(1)解环方程组(水头平差)。(2)解节点方程组(流量平差)。(3)同时解环方程组和节
The adjustment problem of the circulation network of tap water distribution pipelines is to determine the flow distribution of the ring network segment and the corresponding head loss. The mathematical problem of hydraulic calculation of the ring network is the problem of solving m-1 linear equations (∑Q=0) and n nonlinear equations (∑h=∑SQ~2=0). The number of equations here is the same as the amount of pipe segment flow that you want. From a mathematical point of view, there are feasible solutions, but it is difficult to arrive at an exact solution. The method is nothing more than the following three: (1) solving the ring equations (head adjustment). (2) Solve nodal equations (flow adjustment). (3) Simultaneous solution of the system of equations and sections