Water Simulation Packages (WSP)

The following information was received from Innovative Hydraulics:

What is Visual Hydraulics?
Visual Hydraulics is a state of the art, flexible hydraulic analysis tool. It is used primarily for modeling the hydraulic characteristics of water and wastewater treatment plants, and is capable of analyzing entire hydraulic profiles. The program follows the traditional method for analyzing water surface profiles: a downstream control point is selected, and the hydraulic profile is then determined upstream of that control point.

What can Visual Hydraulics model?
Visual Hydraulics covers most of the hydraulic features typically encountered in a treatment plant application. A user may analyze the following features: full flow pipes, open channels (rectangular, trapezoidal, triangular, circular), tanks, orifice/baffle/gate(s), weirs (v-notch, rectangular, sharp crested, Cipolletti, contracted, and broad crested), flumes (Parshall, rectangular, trapezoidal, cutthroat), racks/screening devices, tank launders, filter media, contraction/enlargements, and Venturi meters. Submerged weir and flume analysis is also included.

Visual Hydraulics Features:

• Full hydraulic analysis capabilities for almost any hydraulic feature.
• Multiple flow options, including any number of return flows.
• Take units off-line or put units on-line and see how it affects the hydraulic profile.
• Specialty tools, including unequal flow splitting, user defined loss equations, and manifolds/diffusers.
• Built-in alerts catch unwanted conditions, such as high velocities, weir submergence, and high losses.
• Advanced summary features including summary equations, diagrams, and reports.
• Analyze an entire hydraulic profile or just one hydraulic feature.

For more information see Innovative Hydraulics web page.

From Pipeflow Software web site:

A wide range of hydraulic engineering problems can be solved with Net-Pipe steady-state simulation and unsteady-state simulation: Water-hammer studies for hydroelectric power plants, analyses of surge pressure alleviation for oil pipelines, layout studies for pipe installations, or capacity calculations for water distribution networks, to name a few. Net-Pipe is designed for the hydraulic engineer and for the technical specialist with a background in fluid mechanics.

You can use Microsoft Visio to drag-and-drop the pipe network elements from a customized stencil containing the Net-Pipe hydraulic elements:

Click here for a full picture

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Net-Pipe by Pipeflow Software

From MWH Soft web site:

H2OMAP Water provides the most powerful and practical GIS platform for water utility solutions. As a stand-alone GIS-based program, H2OMAP Water combines spatial analysis tools and mapping functions with sophisticated and accurate network modeling for complete infrastructure (asset) management and business planning. It performs fast, reliable and comprehensive hydraulic and dynamic water quality modeling, energy management (with true variable speed pumping), real-time simulation and control with on-line SCADA interface, complete fire flow analysis, and unidirectional flushing. The program can also be effectively used to analyze pressurized sewer collection system.

Hydraulic Modeling Capabilities:

• places no limit on the size of the network and number of components that can be analyzed (unlimited link version)
• supports both English and metric (Standard International) units
• analyzes steady-state and extended period simulations
• computes friction headloss using the Hazen-Williams, Darcy-Weisbach, or Chezy-Manning formulas
• includes minor (local) head losses for bends, meters, fittings, etc.
• models constant or variable speed pumps
• models a fixed pressure pump (FPP) that automatically adjusts its speed to maintain a user specified target pressure (or head) anywhere in the system
• models turbines and totalizing flow meters
• calculates Net Positive Suction Head requirements (available NPSH, required NPSH, and cavitation index) to ensure cavitation free operation
• determines system head curves and fire hydrant rating curves
• calculates available and design fire flows at minimum residual pressures
• computes pumping energy and cost based on variable electricity and demand charges
• accommodates various types of static and dynamic control valves including shutoff, check, float, pressure reducing, pressure sustaining, dual pressure regulating (maintain downstream and upstream pressures), pressure breaker, vacuum breaker, motorized throttled, general purpose, flow control, and reduced pressure backflow prevention valves
• allows single and multiple inlet/outlet storage tanks to have any shape (i.e., diameter can vary with height)
• models constant and variable head reservoirs
• considers multiple demand categories at nodes, each with its own pattern of time variation
• models pressure-dependent demand issuing from emitters (sprinkler heads)
• automatically carries out pressure-demand analysis to compute the percentage (%) of demand supplied to each node (ratio of actual demand vs specified demand)
• tracks flow reversals for pipe flushing
• determines pipe sequences for unidirectional flushing
• simulates leakage in a pipe
• specifies system operation based on both simple node pressure, tank level, link flow, or timer controls and on complex rule-based controls
• provides on-line SCADA interface with alarms

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H2OMap Water

From the Perf-Q web site:

Performance-Q – Perf-Q for short – is a water quality model applicable to drinking water transmission and distribution systems. It is based on an event-driven advection and mixing model, and includes the capability to simulate the propagation and transformation of physico-chemical and microbiological parameters throughout water networks.

Perf-Q uses Epanet standard script input files to perform a complete hydraulic and water quality extended-period simulation. It models chlorine (free and combined), suspended bacteria, organic matter and travel time, taking account of such ambient variables as pH, temperature and pipe biofilm load. The event-driven Lagrangean advection and mixing model provides a basis for taking account of all such parameters and variables simultaneously and model their transformation taking into consideration both their inter-relationships and the influence of hydraulic variables such as flow velocity.

For a free download and a manual see Perf-Q web site.

The following information was received from ATMOS International:

ATMOS LSIM is a modern pipeline simulation software that calculates liquid flow, pressure, density, temperature and other variables under steady state, transient and shut-in conditions. Using a fully graphical configuration tool, LSIM models pipes, valves, tanks, filters, heat exchangers, leaks, supply and delivery points.

Complex control mechanisms can be implemented for pumps and valves based on PID (Proportional-Integral-Derivative) and logic controllers.

LSIM is fully OPC (OLE for Process Control) compliant, making it possible to synchronise an off-line simulator with a real-time system. The simulation boundary condition could be a fixed value, a user-defined profile or an OPC tag from a SCADA system. All model calculated values can be saved in a database, trended graphically and output to a SCADA or other computer
systems using OPC.

LSIM simulates dynamic flow of single liquid, batched fluids, mixed fluids and vapour pockets. For the simulation of batched fluids, batch interface volume can be calculated together with the interface position and length.

With a configurable grid length from 0.5 meter to tens of kilometers, LSIM is accurate enough for detailed surge analysis and fast enough for operational scenario analysis and planning.

More information can be found at ATMOS International web site.

Simulation & optimization of water supply networks. From the University of Karlsruhe web site:

KANET Simulation
KANET Simulation performs the time extended hydraulic network balance of a reticulate system whose graph, diameters, pipe material or friction factors, flow input and demand, characteristics of pumps, boosters, valves, location of tanks, pumping stations, valves are known. The model also allows for tracing the propagation of an input concentration.

KANET Optimization
KANET Optimization delivers cost optimal diameters and pumping heads of a reticulate water supply network based upon a specified design demand and subject to constraints such as max velocities, min supply pressure, location of pumps, tanks and reservoirs. Already existing pipes are taken into account, optimal tradeoffs between investment and operating cost are observed using the present value. Simultaneous optimization of the layout is included.

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KANET

From DHI web site:

MIKE URBAN combines DHI’s 20-year tradition for leadership in simulation engines with ESRI’s world leading GIS technology. The result is a tool set that defines a new industry standard in usability, productivity and pure pleasure.

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MIKE URBAN

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 Impulse’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.

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.

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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NEPLAN Water