复杂环状管网水力计算方法探讨

Study on the mathematical method of hydraulic calculation for pipe systems

运用流体力学、数值计算方法的相关知识,详细地分析了影响复杂管网水力输送的因素,提出了复杂环状管网水力计算方法。通过严密的数学推导,导出了节点流量修正量的一般表达式,运用VB编程实现了徐州市某小区自来水管网的水力计算,通过联立节点流量连续性方程和管段水力损失平衡方程建立的管网水力平衡计算模型,具有收敛速度快,精度高,克服传统计算方法水力损失与节点流量不平衡的缺陷,是目前大城市复杂环状管网水力计算的有效方法。

On the basis of the fluid mechanics and the numerical method,the author analyze some factors,which are associated with the transformation of the pipe systems,a new mathematical method is developed.The author use VB to solve the complex pipe systems of XuZhou .The mathematical model which combines the continues of mass equation with the loss of pipe system equtation has good results .It is convenient for the use of computers to make programes in order to solve some complex pipe systems of big city,with regard to the traditional method.