by Elad SalomonsPosted on Posted in Commercial software, Water simulation Packages — No Comments ↓

From “Applied Flow Technology” web site:

AFT Impulse provides a practical tool for the piping systems engineer to address the complex subject of liquid piping systems waterhammer and surge transient events. AFT Impulse incorporates an integral steady-state solver to calculate the initial conditions and seamlessly transfer these to the transient solver. Based on the same, proven solver in AFT Fathom, steady-state solutions are determined using a modified Newton-Raphson matrix interation. AFT Impulseג€™s transient flow solution engine is based on the Method of Characteristics, which utilizes time steps and pipe section lengths that are an integral fraction of the wave speed. This permits a direct solution of each time step, making AFT Impulse highly efficient.

AFT Impulse lets you specify transients both on a time and event basis. For example, initiate a pump startup based on the pressure at a selected location in the system or a valve closure upon the flow direction at selected location. This powerful capability greatly expands the type of transients that may be modeled including a variety of control logic functions.

Pump modeling can be as simple as a fixed flow or as sophisticated as pump curves and four quadrant effects modeling the various possible combinations of forward and reverse flow and rotation. Startup includes the ability to determine pump acceleration from specified pump/driver inertia and driver torque vs speed. Pump models may include integral check valves and reverse rotation brakes.



More detailes at AFT web site.

by Elad SalomonsPosted on Posted in EPANET related — 1 Comment ↓

I have been asked several times for the older version of EPANET (version 1.1e). It turns out that Prof. Fernando Martiֲ­nez from Valencia (www.redhisp.upv.es) kept the installation file. So here it is…



Download EPANET version 1.1e here

by Elad SalomonsPosted on Posted in Events & news, General — No Comments ↓

The United Nations General Assembly adopted resolution A/RES/47/193 of 22 December 1992 by which 22 March of each year was declared World Day for Water.



For more information see the unesco web site

This is the Google icon of today in honor of the Waorld Water Day:

by Elad SalomonsPosted on Posted in Commercial software, Water simulation Packages — No Comments ↓

From TECHNOTRADE web site:

WATSYS will help you analyze, design and manage your water supply system. It is a comprehensive graphic information system (GIS) for your water infrastructure. This software will simulate situations to identify and correct deficiencies in an existing distribution system, to expand a system to meet future demands, or to predict a system’s performance during such emergencies as pump failures, main breaks, equipment malfunctions or fire flows. It may be used to carry out simulations for peak usage periods and low demand cycles. WATSYS can also perform water quality analysis including chlorine decay, fluoride distribution, source tracing and water age. Models may be created to better understand the movement and transformation of treated water.

For more information see WATSYS web page.

by Elad SalomonsPosted on Posted in Water security — No Comments ↓

News and opinion on best practices, future trends, security standards, vendor offerings, and all other issues related to SCADA security.

See it here

Tagged with:

by Elad SalomonsPosted on Posted in General — No Comments ↓

A collection of water news headers from all over the world is available by Moreover Technologies (Real-Time Aggregated Online News and Information).

Some headers from today (7 March 2005):

  • 600 left without water supply – Fiji Times
  • New Bedford prepares to add fluoride to water supply – CBS4 Boston
  • Mississippi sues Memphis for tapping underground water supplies

Water news headers
(Some news articles require registration)

by Elad SalomonsPosted on Posted in General — No Comments ↓

An email list devoted to fire hydrants by FireHydrant.org:

This is the first mailing list devoted to fire hydrants. This list was started with just a few folks, but has grown to over 150 members from around the world. People from a variety of backgrounds are on the list, from project engineers, firefighters, fire hydrant technicians, and hydrant sales reps, to members of the general public. If you have a question, someone will likely have an answer. You can also join just to read and enjoy the periodic mail.

Subscribe information.

by Elad SalomonsPosted on Posted in Commercial software, Water simulation Packages — No Comments ↓

From the NEPLAN web site:

NEPLAN Gas, Water, District Heating – Analysis tool for gas, water and district heating networks.

NEPLAN is used to analyses, plan, optimize and manage gas and water pipeline networks. Any desired number of nodes and tubes can be quickly and interactively entered, computed and evaluated. NEPLAN is continually being enhanced, not least due to supportive empirical feedback and a fruitful dialogue between satisfied users and our development people. NEPLAN’s modular concept means that network planners can put together a planning system specifically tailored to their own individual needs.

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by Elad SalomonsPosted on Posted in Papers and Research, Water security — No Comments ↓

“With financial help from the Pentagon, Israeli scientists develop a means for identifying any kind of water contamination. The well-equipped Israeli defense establishment may receive a significant addition by the end of the year – an artificial tongue.

Teams of scientists at three of Israel’s universities – Hebrew University, Tel Aviv University and Ben-Gurion University – have overcome a hurdle that was considered impossible to conquer and developed an apparatus capable of identifying every kind of water contamination.”

See the full story at haaretz.com.

by Elad SalomonsPosted on Posted in Commercial software, Water simulation Packages — 2 Comments ↓

WaterCAD and WaterGEMS (Bentley Systems, Incorporated, Haestad Solutions Center) are a complete geographic information management system for your water utility in a cost-effective package that saves you money each time you use it. Analyze water quality, determine fire flow requirements, calibrate large distribution networks and more with WaterCADג€™s powerful hydraulic analysis tools. WaterCAD is a sophisticated tool that enables engineers and decision makers to analyze and manage distribution networks with unprecedented accuracy and efficiency.

WaterCAD is the entry level product which solves for flow and pressure in piping networks with some enhancements in terms of:

  • Scenario management
  • Fire flow analysis
  • Variable speed pumping
  • System head curves
  • Construction cost analysis
  • Energy cost analysis
  • Totalizing flow meter
  • Import and export to and from a variety of data sources
  • CAD polyline to pipe import
  • Profiles
  • Extraction of elevations from AutoCAD
  • Export of model to transient analysis model
  • Flex tables
  • User defined data
  • Model cleanup
  • Quick edit
  • Flex units

WaterCAD can be run as a stand alone model or from within AutoCAD.
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