排序方式: 共有32条查询结果,搜索用时 0 毫秒
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应用全生命周期法分析供水管网不同管材组合的各阶段能耗,为兼顾经济性和低碳降耗,建立供水管网的能耗函数与管网经济性函数耦合组成多目标优化函数.采用C++平台智能遗传算法对供水管网多目标优化函数进行求解.最后以某城市局部区域的管网为实例进行模型实际应用,计算结果能够在保证经济性的基础上兼顾管网全生命周期的能耗以及管网的供水安全,较好地与实际相吻合. 相似文献
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为避免采用商业建模软件需要面对的二次开发问题,使得建模软件更为贴合不同水司的需求,提出了基于EPANET和ArcEngine快速构建供水管网建模软件的方法。该系统采用Geodatabase存储模型数据,以COM技术对EPANET源代码进行改进和封装,在ArcEngine的.NET框架中实现界面和大部分功能,开发时间短,费用低,功能针对性强,已在华北某省会城市得到成功应用。 相似文献
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《Urban Water Journal》2013,10(5):353-361
This paper intends to provide a detailed methodology on the development of the optimization model including reliability for design of water distribution networks using genetic algorithms (GA) and EPANET in the MATLAB environment. The coding developed is easy to use and also flexible. A new parameter is proposed to determine the overall network reliability using network nodal demands and their corresponding satisfaction indices and is incorporated in the optimization model. The proposed methodology is tested on a standard Hanoi network. After several runs and out of many optimal solutions obtained, the solution with a total cost of 7.78 million associated with a reliability of 0.7323 is considered as the best and the corresponding results are presented and compared with previous research. 相似文献
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基于MLE模型和EPANET的城市供水系统风险评价 总被引:1,自引:0,他引:1
为有效解决城市供水系统可能面临人为威胁的不确定性问题,建立了城市供水系统面临人为威胁时风险的定量化评价方法.以华北某市KGWL加工区的供水系统为例,首先利用马尔科夫潜在影响模型(MLE)对城市供水系统可能面临的人为威胁进行分析,定量化计算了城市供水系统的人为威胁水平;然后,利用EPANET软件对不同人为威胁作用下城市供水系统的运行工况进行模拟,计算了不同人为威胁发生后所产生的后果.根据上述研究,最终实现了城市供水系统面临人为威胁时风险大小的定量化计算和评价,研究结果可为城市供水系统安全运行和升级改造提供决策依据. 相似文献
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Çağlayan Sert 《Civil Engineering and Environmental Systems》2017,34(3-4):278-297
Booster disinfection stations are the solution alternative to maintain required disinfectant residual concentration in water distribution networks. In the present study, an optimisation problem to determine the optimum injection rates is solved. The minimisation of the total injected mass is considered as the objective function which is subjected to bound constraints on chlorine concentration. Two formulations are used for the linear optimisation problem, with and without considering the initial concentrations as unknowns. Determination of variable network hydraulics and chlorine concentrations is achieved by EPANET. A C++ code was developed to interface with EPANET by means of the EPANET Programmer's Toolkit for optimisation of the disinfectant mass applied to the network. Finally, a cross check is achieved in EPANET software for both disinfectant residual concentrations and linear superposition principle. 相似文献
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在北京市再生水管网规划设计中,通过GIS建立规划管网的EPANET水力模型,消除了管网多水源供水、回用范围大、环状支状管网混合、结构复杂对水力计算的不利影响.并且针对水力计算结果--节点压力、管段流速和水力坡降(水头损失)进行分析,通过调整初始设计管径不合理的管段管径以及根据北京市地形分布将再生水管网划分为4个弱连接的供水分区,解决了再生水厂多数集中在地形较低的东部地区和大范围回用高程变化所带来的管网压力过高的问题,提高了管网设计的合理性,降低了管网的投资和运行成本.研究中应用的方法和过程具有通用性,可以用于有压给水、再生水管网系统的模拟. 相似文献