摘要
给水管网仿真是城市供水系统管理的一个重点内容,给水管网管段摩阻系数的正确确定直接关系到给水管网仿真的准确性。将给水管网的水力模型与反问题分析方法相结合,建立管段摩阻系数反分析模型,给出其变尺度求解方法和计算步骤。结合室内给水管网实验平台在多种工况下的实测数据,按照反分析模型及其求解方法计算管段摩阻系数,再以求得的管段摩阻系数为基础,利用EPANET软件计算管网的节点水头与管段流量,与实测值进行对比分析。并利用实际城市给水管网对模型的准确性进行验证。
Water network simulation is an important content of urban water system management To correctly determine the friction factors is directly related to the accuracy of simulation .Combining the hydraulic model of water network with the anti-analysis meth‐od ,the anti-analysis model for the friction factors of pipeline was established ,and the solution to the variable metric method and its calculation steps were offered .By using the measured data from the indoor water network experiment platform under a variety of working conditions ,the friction factors of pipeline is calculated according to the anti-analysis model and the analytic method .Based on the calculated friction factors ,the values of the node head and flow of networks can be computed by the software EPANET , which can be contrasted with the measured values through pressure gauges and flow meters .The actual urban water distribution net‐works was used to check the accuracy of anti-analysis model .
出处
《中国农村水利水电》
北大核心
2015年第7期89-93,共5页
China Rural Water and Hydropower
基金
中央高校基本科研业务费专项资金科技创新项目(A00920502051405-49)
关键词
给水管网
管段摩阻系数
反分析
变尺度法
water distribution
friction factor
inverse analysis
variable metric method
