多管材给水管网水力计算的探讨  

Study on hydraulic calculation in multi-material pipe for water supply network

作　　者：王彤[1] 丁同庆 张生录[3] 杨东娟[1] 

机构地区：[1]长安大学环境科学与工程学院,陕西西安710061 [2]黑河市自来水公司,黑龙江黑河164300 [3]长安大学基建处,陕西西安710064

出　　处：《长安大学学报（建筑与环境科学版）》2004年第3期54-56,共3页

基　　金：建设部科技项目 (建科 0 2 -5 -1.17

摘　　要：根据多管材给水管网的水流特点及其水头损失计算公式 ,确定了给水管网沿线流量折算节点流量的折算系数的取值 ,应用有限元法分析多管材供水管网的水力平衡计算数学模型 ,由各个管段的水力平衡单元矩阵方程集合为给水管网水力平衡的整体矩阵方程 ,通过引入节点水压边界条件并迭代求解管网水力平衡整体矩阵方程——对称正定线性方程组 ,得出各项水力要素。给出了计算程序框图 ,编写了通用电算程序 ,经实例计算表明 ,能够快捷准确地完成多管材给水管网的水力平衡计算 。Based on the water flow feature and the form ul a of calculation of energy loss which through multi-material supply pipe,this p aper determined the convert coefficient that change passing flow quantity into p oint flow quantity.FEM was used to analyze mathematic model of hydraulic balance in water supply network of multi-material supply pipe,and to aggregate unit matrix equation of each pipe into full matrix equation of network.By introducing the boundary condition and repeated calculating the symmetry positive matrix li near equation groups,every hydraulic parameter can be solved.Finally,drawing of program was given,the general program was made and actuality calculation example was presented.The results of this paper satisfied with hydraulic balance calcul ation of water supply network of multi-material pipe.

关 键 词：给水管网 水力平衡 管材 水力计算 节点流量 管网水 框图 矩阵方程 正定 线性方程组 

分 类 号：TU991[建筑科学—市政工程] O151.21[理学—数学]