Study of Water Distribution Pipe Network Using Epanet2.0

2012 ◽  
Vol 3 (4) ◽  
pp. 214-216
Author(s):  
Urmi Parikh ◽  
◽  
B. M. Vadher B. M. Vadher ◽  
Dr. P. G. Agnihotry Dr. P. G. Agnihotry
Keyword(s):  
Water Distribution ◽  
Pipe Network

scholarly journals Estimation of hazen williams’s constant for a residential water distribution network; GMDH and PSO approach

2018 ◽  
Vol 7 (2.1) ◽  
pp. 92
Author(s):  
Dharmendra Kumar Tyagi ◽  
Mrinmoy Majumder ◽  
Chander Kant ◽  
Ashish Prabhat Singh
Keyword(s):  
Fluid Flow ◽  
Pipe Flow ◽  
Water Distribution ◽  
Water Distribution Network ◽  
Pipe Material ◽  
Pipe Network ◽  
Closed Channel ◽  
Computation Techniques ◽  
Flow Potential ◽  
Residential Water

Hazen-William equation is used to estimate the Fluid flow in closed channel. There are various models for estimation of pipe flow, however the accuracy and reliability of models varies due to the empirical nature of the Hazen-William constant .the applicability of model also become constrained due to the dependency of constant on pipe material, dimension and flow potential. Different type of pipeline arranged in different Networks will require different value of the constant and is generally retrieved from the data collected for the pipe network. The case dependency of the model has makes the model erroneous and often subjective that is why the present study tries to propose a model which can be used for any network where the output will depend upon the inputs. In this aspect the soft computation techniques: - GMDH and PSO was utilized in an unconventional way to establish the value of CHW =f (H, L, V, D).  According to result the GMDH becomes the better model than the PSO where the accuracy is about 76.315%. 

scholarly journals Elevation Effect in Urban Water Distribution Model

2018 ◽  
Vol 153 ◽  
pp. 09001
Author(s):  
Rangsan Wannapop ◽  
Thira Jearsiripongkul ◽  
Krit Jiamjiroch
Keyword(s):  
Water Supply ◽  
Water Distribution ◽  
Supply System ◽  
Distribution Model ◽  
Pipeline System ◽  
Urban Water ◽  
Main Pipeline ◽  
Pipe Network ◽  
Pipeline Network ◽  
Water Distribution Model

Metropolitan Waterworks Authority (MWA) is Thailand's national government agency responsible for the supply of water to 3 provinces Bangkok, Nonthaburi and Samut Prakan with more than 2,384.9 km2 of service area and 2,281,058 consumers in the year 2016. Bangkok, which is both the capital and the economic center of the country, is densely populated. Consequently, there is a huge demand for water; MWA has to supply 5.914 million cubic meters of water per day. Because the metropolitan water supply area is a densely populated city, the water supply system is very complex like a spider’s web. For this reason, MWA has adopted EPANET software for its water supply managing tool in the main pipeline system. There are some mistakes in the main pipe network; the elevations of the nodes are not assigned, so there are some errors. In this study, we have assigned elevations for all nodes on the pipeline network based on mean sea level (MSL). After adjusting the elevation of each node, it was found that the new pipeline network has increased the correlation between means to 0.893 from the existing model mean of that is 0.803 of accuracy up 0.09 (11.2%).

A novel method to diagnose factors influencing in leakage in water distribution systems including extreme weather events

2021 ◽  
Author(s):  
Ran Yan ◽  
Yu Li ◽  
Jinhui Jeanne Huang
Keyword(s):  
Distribution Systems ◽  
Water Distribution ◽  
Distribution Networks ◽  
Rapid Expansion ◽  
Water Distribution Networks ◽  
Extreme Weather Events ◽  
Impact Factors ◽  
Cold Wave ◽  
Burial Depth ◽  
Pipe Network

<p>During January 2016 and December 2020, eastern and southern China including Shanghai experienced a rapid drop in temperatures along with snow. This cold wave which also had a severe impact on water distribution networks. Leakage of pipe network causes serious economic loss and waste of water resources. Nonetheless, cold wave is not the only factor affecting leakage from a pipe network. There are also other factors including the burial depth of pipes, the materials of pipes, the diameters of pipes, break history and so on. In this work, we use machine learning method and Bayesian distribution regression to explore the relationship between pipe leaks and impact factors. Based on results, risk maps of water distribution networks are generated. This research indicated that which risk factors is important for leakage detection and water loss management of urban water supply network, which can be promising for wide practical applications due to rapid expansion of data.</p>

scholarly journals Pemanfaatan Sistem Informasi Geografis Dalam Evaluasi Kinerja Penyediaan Air Minum Perpipaan (Studi Kasus Sistem Lendah Kabupaten Kulon Progo)

2018 ◽  
Vol 10 (1) ◽  
pp. 14
Author(s):  
Angga Budi Kusuma
Keyword(s):  
Drinking Water ◽  
Water Distribution ◽  
Water Pressure ◽  
Water Source ◽  
Distribution Networks ◽  
Geographic Information ◽  
Accurate Information ◽  
Pipe Network ◽  
Network Evaluation ◽  
Pressure Reducing Valve

Abstrak Evaluasi jaringan perpipaan merupakan bagian dari evaluasi kinerja penyediaan air minum. Sistem Informasi Geografis (SIG) memberikan informasi akurat mengenai informasi kebumian dan integrasinya dengan Epanet memberikan efisiensi dalam evaluasi jaringan perpipaan. Jaringan Perpipaan Sistem Lendah merupakan jaringan distribusi air minum dengan sistem pompa-gravitasi dengan sumber air baku Sungai Progo. Hasil analisis menunjukan bahwa Sistem Lendah mampu menyediakan kebutuhan air minum selama 24 jam. Sisa tekanan air di beberapa lokasi sangat tinggi diatas persyaratan menyebebabkan rentan kebocoran. Kecepatan aliran di beberapa ruas pipa masih dibawah kecepatan yang dipersyaratkan menyebabkan potensi pengendapan dalam pipa. Beberapa solusi dapat digunakan untuk mengatasi permasalahan tersebut dengan mengganti jenis pipa, mengganti diameter pipa sesuai dengan kriteria, menambahkan bak pelepas tekanan (BTP) atau pressure reducing valve (valve) untuk mengurangi sisa tekanan di beberapa titik. Kata Kunci: Sistem Informasi Geografis, Epanet, Sistem Lendah, Jaringan PerpipaanAbstractPipe network evaluation is a part of evaluation of drinking water supply performance. Geographic Information System (GIS) provides accurate information about earth and its integration with Epanet gives eficiency in pipe network evaluation. Lendah system pipe network is drinking water distribution networks with pump-gravitation system and water of Progo River as the water source. The analyst shows that Lendah System is capable of providing drinking water needs 24 hours daily.The remaining water pressure in several locations are exceeded standard causing leakage vulnerability. Water velocity of several pipe segments is below required velocity. Several solutions could be taken to solve those problems they change pipe type, change pipe diameter suited to standard, add pressure release tube (PRT) or pressure reducing valve (valve) to reduce remaining pressure in several nodes. Keywords: Geographic Information Systems, Epanet, Lendah System, Pipe Network

Division method for water distribution networks in hilly areas

2015 ◽  
Vol 16 (3) ◽  
pp. 727-736 ◽  
Author(s):  
Tao Tao ◽  
Jiada Li ◽  
Kunlun Xin ◽  
Peng Liu ◽  
Xiaolan Xiong
Keyword(s):  
Water Supply ◽  
Distribution Systems ◽  
Water Distribution ◽  
Water Distribution Systems ◽  
Distribution Networks ◽  
Pipe Network ◽  
Assessment Index ◽  
Supply Pipe ◽  
Low Degree ◽  
Pressure Limitation

Water distribution systems in hilly areas are always divided into several zones due to the undulating terrain. The present approach of dividing water distribution systems lacks an assessment index and is characterized by a low degree of automation. With the building of a mathematical model, this paper introduces two indicators – pressure limitation and pressure variation – to enable the automatic division of the water supply pipe network. It prioritizes economic index as the objective function in the evaluation of the division of water distribution systems in hilly areas, and then selects the optimal division scheme by generic algorithm in a large number of candidates. The SY terrain in YW City China is used for verification. Compared to traditional water supply partition methods, this procedure is easier to operate time-savingly by staff and is more automatic.

Health Risk Assessment of Disinfection By-Products in the Water Distribution Network in a Southern City of Jiangsu

2013 ◽  
Vol 777 ◽  
pp. 360-364
Author(s):  
Yuan Li ◽  
Feng E. Zhang ◽  
Jian Xu ◽  
Chun Fang Chen
Keyword(s):  
Risk Assessment ◽  
Cancer Risk ◽  
Water Distribution ◽  
Distribution Network ◽  
Water Distribution Network ◽  
Carcinogenic Risk ◽  
Cancer Risk Assessment ◽  
Pipe Network ◽  
Southern City ◽  
By Products

The cancer risk assessment model recommended US EPA was used to access the carcinogenicity of disinfection byproducts (DBPs) in water distribution network in a Southern City of Jiangsu. The trihalomethanes (THMs) and haloacetic acids (HAAs) with carcinogenic risk was considered to be the research focus on the cancer risk assessment. The carcinogenic risk along the pipeline was explored through monitoring the changes of the THMs and HAAs .The results showed as follows: the disinfection by-products increased along the pipe network and cancer risk increased too. The maximum cancer risk within the area of water supply pipe network was calculated. The RTmax was 4.72×10-5, which was between5.10-5 and 10-6. So the carcinogenic risk could be accepted and some measures could be considered to be taken to reduce the carcinogenic risk.

scholarly journals Development of the Urban Water Balance Model by Linking Water Distribution and Sewer Networks

2020 ◽  
Vol 20 (6) ◽  
pp. 369-377
Author(s):  
Gunhui Chung ◽  
Won Soo Ohk
Keyword(s):  
Water Supply ◽  
Water Distribution ◽  
Low Impact Development ◽  
Distribution Networks ◽  
Water Circulation ◽  
Urban Water ◽  
Pipe Network ◽  
Sewage Pipe ◽  
Pipe Networks ◽  
Supply Pipe

Due to urban overcrowding, the population density of residential areas and water use per unit are increasing. Therefore, it is necessary to study the flow of water supplied to cities and to improve the healthy circulation of urban water. This study used Modelica, a non-causal analytical program. Using Open Modelica, the researchers constructed a model linking water distribution and sewerage, as the basis of a balanced urban water model. Using the programmer's toolkit provided by EPA-NET and EPA-SWMM, which are commonly used to simulate the existing water supply and sewage pipe networks, Open Modelica-based water distribution networks and sewage pipe networks can be connected and simulated based on the customer block. A model was built so that 90% of the hourly water consumption supplied to the water supply pipe network can be automatically introduced into the sewage pipe network. If a matching table is constructed to connect the nodes of the water supply pipe network and the sewer pipe network, the nodes will reflect in the graphical user interface (GUI) developed in Open Modelica. It was developed to enable modification of links, pumps, tanks, and valves. The 48-hour water supply was simulated using the developed model, and it was confirmed that water supply and sewage networks were successfully connected. In the future, we plan to develop a more expanded and realistic urban water circulation model by considering additional urban water circulation factors, such as sewage treatment, water reuse, rainwater use, storm runoff, and low-impact development facilities. Through this study, it was confirmed that Modelica can simulate changes in the system over time. Since it is a formula-based non-causal simulation language, it is possible to establish and reuse relationships between blocks through block-by-block development of urban water circulation elements. It is expected to contribute to the visualization and concretization of future urban water circulation models.

scholarly journals Dynamical stability of water distribution networks

2019 ◽  
Vol 475 (2230) ◽  
pp. 20190291 ◽  
Author(s):  
Naoki Masuda ◽  
Fanlin Meng
Keyword(s):  
Nonlinear Dynamics ◽  
Flow Rate ◽  
Distribution System ◽  
Water Distribution ◽  
Nonlinear Dynamical System ◽  
Distribution Networks ◽  
Analytical Framework ◽  
Water Distribution Networks ◽  
Pipe Network ◽  
Nonlinear Dynamical

Water distribution networks are hydraulic infrastructures that aim to meet water demands at their various nodes. Water flows through pipes in the network create nonlinear dynamics on networks. A desirable feature of water distribution networks is high resistance to failures and other shocks to the system. Such threats would at least transiently change the flow rate in various pipes, potentially undermining the functionality of the whole water distribution system. Here we carry out a linear stability analysis for a nonlinear dynamical system representing the flow rate through pipes that are interconnected through an arbitrary pipe network with reservoirs and consumer nodes. We show that the steady state is always locally stable and develop a method to calculate the eigenvalue that corresponds to the mode that decays the most slowly towards the equilibrium, which we use as an index for resilience of the system. We show that the proposed index is positively correlated with the recovery rate of the pipe network, which was derived from a realistic and industrially popular simulator. The present analytical framework is expected to be useful for deploying tools from nonlinear dynamics and network analysis in the design, resilience management and scenario testing of water distribution networks.

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