| Methods |
Products/Links |
Application Features |
| Simulation and Modeling Tools |
What
is "system dynamics?"  |
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Analytica  |
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Berkeley Madonna  |
General purpose differential equation solver. Tool is able to solve
ordinary differential equations, difference equations, multi-dimensional transcendental
algebraic equation roots, as well as discrete simulations using conveyors, ovens, and queues
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Inspiration  |
General purpose differential equation solver. Tool is able
to solve ordinary differential equations, difference equations,
multi-dimensional transcendental algebraic equation roots, as
well as discrete simulations using conveyors, ovens, and queues
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Extend  |
Extend is a dynamic system simulation package that can be
used to build models of complex systems and to perform "what
if" sensitivity analysis on system parameters. Extend can be
used as a decision making tool to compare different planning
level scenarios. |
|
Gold
Sim  |
Monte Carlo simulation software solution for dynamically
modeling complex systems; supports decision and risk analysis
by simulating future performance while quantitatively representing
the uncertainty and risks inherent in all complex systems
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Matlab  |
Interactive environment for algorithm development, data
visualization, data analysis, and numeric computation.
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ModelMaker
4  |
Modeling tool includes optimization, minimization, Monte
Carlo simulation, and sensitivity analysis methods using either
continuous or discontinuous functions.
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Simulink  |
Modeling and simulation tool includes interactive graphical
environment and customizable set of block libraries; allows
users to design, simulate, and test time-varying systems. Can
be integrated with MATLAB.
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STELLA  |
STELLA is dynamic systems modeling software with applications
in education, environmental, research, business, management,
policy development, and decision making. STELLA is a dynamic
system simulation package that allows users to model stock and
flow systems with operational or planning level resolution.
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Vensim
 |
Can be used for developing, analyzing, and packaging dynamic
feedback models, constructed graphically or in a text editor.
Features include dynamic functions, subscripting (arrays), Monte
Carlo sensitivity analysis, optimization, data handling, and
application interfaces.
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| Simulation with Water
Resources-Specific Tools |
Central Resources Allocation Model (CRAM)  |
CRAM is a generalized water resources system model that
simulates a network of water users and sources to assist in
water allocation studies. CRAM is a proprietary tool of Hydrosphere
Resource Consultants
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HEC-ResSim
 |
Software is designed to be used to model reservoir operations
at one or more reservoirs whose operations are defined by a
variety of operational goals and constraints.
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OASIS
|
OASIS simulates the routing of water through a water resources
system. Uses "Position Analysis," which is a variation on Monte
Carlo simulation. OASIS is a proprietary tool of Hydrologics
Inc.
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RiverWare
|
RiverWare is a modeling tool that develops multi-objective
simulations and optimizations of river and reservoir systems.
The software is written for reservoir and river systems planning
and operations.
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Water
Evaluation and Planning System (WEAP)  |
WEAP is focused on water supply projects in the context
of demand-side management, and water quality and ecosystem preservation
and protection. WEAP balances water use patterns, equipment
efficiencies, re-use strategies, costs, and water allocation
schemes with stream flow, groundwater resources, reservoirs,
and water transfers. It can simulate both the natural and constructed
elements of a water resources system.
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| Optimization Tools |
What is optimization?  |
CRAM is a generalized water resources system model that
simulates a network of water users and sources to assist in
water allocation studies. CRAM is a proprietary tool of Hydrosphere
Resource Consultants
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|
HEC Prescriptive Reservoir Model (PRM)  |
A tool to optimize multi-reservoir systems. HEC PRM performs
deterministic optimization of the flow network and defines the
optimal values for flow and over time to accomplish a series
of objectives.
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