Water Simulation

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Update: following a comment by Joaquim Sousa, one of the developers of WaterNetGen, I have updated the post since it seems I made a mistake and didn’t use the right settings for the SA method – sorry. A few months ago, researchers from Coimbra (Portugal) released the WaterNetGen program. WaterNetGen is a free EPANet extension to automatically [...]

During the 14th Water Distribution Systems Analysis Conference (WDSA 2012), a new Battle of the Water Networks will be held: The Battle of the Water Networks (BWN-II) is the fourth in a series of “Battle Competitions” dating back to the “Battle of the Water Networks” in 1985 and more recently the “Battle of the Water Sensor Networks” [...]

A few months ago, the SWAN forum published a list of stated NRW (Non-Revenue Water) rates in urban networks (pdf file). According to this list there are major cities with non-revenue water rate higher than 30%:  Adana Turkey 69.0% Bacolod Philippines 37.0% Bangalore India 36.0% Bangkok Thailand 34.0% Bogota Colombia 41.0% Bucharest Romania 46.0% Caserta Italy [...]

I get this question from time to time from people who are unable to open the EPANet help file in Windows 7. Actually, the help file may not open also on Windows Vista, Windows Server 2008, or Windows Server 2008 R2. The error message some people see is some variation of the following: The Help for [...]

About a month I asked my readers to identify data-sets of digital and analog inputs of two sensors I connected to an iobridge  IO-204 Monitor and Control Module. I offered a prize of 100$ to the first correct answer. I got a few guess: toilet flushes and chlorine concentration (Jean-Baptiste) room temperature and thermostat or smoke alarm (Luke) [...]

THE CONTEST IS OVER – resualts are here Some time ago I reported the water pressure at my house connection. It was around 9 bars! Ever since I was looking for a way to monitor the water pressure and also had my eyes on monitoring flow and some water quality parameters. A few weeks ago [...]

Baoyu Zhuang added a few functions to the EPANet GUI to allow more options while exporting a map to the DXF format. The USEPA version of EPANet allows the user to export a map to DXF using the File->Export->Map form: This export function will save a DXF file containing the nodes and links of the [...]

What do you see? The answer, posted on 27-01-2011 is at the end of the post A free copy of EPANet will be awarded to everyone who submits an answer Have you seen the pictures of the dry Niagara Falls? Update 15/01/2011: most of you are right, this is a damaged fire hydrant. However, what is that black circle [...]

EPANet 3 is due sometime next year and it will probably be the last version supported by the US EPA. Last year, a proposal was made at the 2009 EWRI conference in Kansas City to establish an Open Source Project for EPANet. About two weeks ago, at the WDSA 2010 conference held in the Tucson AZ, Lew [...]

During the WDSA2010 conference, held in Tucson AZ, Lew Rossman gave a sneak peek into the future version of EPANet. It might be called 2.1 or 3.0 and it scheduled to be released probably next year. This will be the last release of EPANet by the US EPA! The following writeup is based on Lew’s paper [...]