In order to support environmental scientists in finding an «adequate» model of the system they are investigating, a computer program is necessary, which allows its users to perform simulations using different models, to assess the identifiability and to estimate the values of model parameters (using measured data), and to estimate prediction uncertainty. The computer program AQUASIM was developed to perform such analyses for technical and natural aquatic systems.
AQUASIM allows its users to define the spatial configuration of the system to be investigated as a set of compartments, which can be connected to each other by links. Currently, the available compartment types include mixed reactors, biofilm reactors (consisting of a biofilm and a bulk fluid phase), advective-diffusive reactors (plug flow reactors with or without dispersion), saturated soil columns (with sorption and pore volume exchange), river sections (describing water flow and substance transport and transformation in open channels) and lakes (describing stratification and substance transport and transformation in the water column of the lake and in adjacent sediment layers). Compartments can be connected by two types of links (lakes can not be linked to other compartments yet). Advective links represent water flow and advective substance transport between compartments, including bifurcations and junctions. Diffusive links represent boundary layers or membranes, which can be penetrated selectively by certain substances. The user of the program is free in specifying any set of state variables and transformation processes to be active within the compartments. For the model as defined by the user, the program is able to perform simulations, sensitivity analyses and parameter estimations using measured data. These features make the program a very useful research tool. Calculated results can be plotted to the screen (window interface version only), written to a Post-Script file for transfer to a printer... ...
WEST is a powerful and user-friendly tool for dynamic modelling and simulation of wastewater treatment plants (WWTP). The extensive state-of-the art model and process library of WEST enables you to model and evaluate almost any kind of modern WWTP.WEST is designed for engineers or professionals who want to simulate processes......
MIKE 21 is the ultimate Swiss army knife of coastal modelling. If you need to simulate physical, chemical or biological processes in coastal or marine areas, MIKE 21 almost certainly has the tool you need.Typical MIKE 21 applications: Design data assessment for coastal and offshore structures Optimisation of port layout......
COMSOL Multiphysics is an engineering, design, and finite element analysis software environment for the modeling and simulation of any physics-based system.......
simFlow is a powerful CFD software, focused on engineering and science. It combines an intuitive user interface with the advantages of the open-source OpenFOAM® libraries in something more than a compact OpenFoam® GUI.......
Kratos is designed as an Open-Source framework for the implementation of numerical methods for the solution of engineering problems. It is written in C++ and is designed to allow collaborative development by large teams of researchers focusing on modularity as well as on performance. The Kratos features a "core" and......
Unified FEA product by Dausalt Systems......
SymPy is a Python library for symbolic computation. The stated goals of the library are to become a full-featured computer algebra system and to keep a simple code base to promote extensibility and comprehensibility. SymPy is written entirely in Python and does not depend on any additional libraries. It is......
COCO (CAPE-OPEN to CAPE-OPEN) is a free-of-charge CAPE-OPEN compliant steady-state simulation environment consisting of the following components:COFE - the CAPE-OPEN Flowsheet Environment is an intuitive graphical user interface to chemical flowsheeting. COFE has sequential solution algorithm using automatic tear streams. COFE displays properties of streams, deals with unit-conversion and......
PCBWeb is a 100% free Windows desktop CAD application for designing and manufacturing electronics hardware. Features include schematic capture, PCB Layout with gerber output, and Bill of Materials manager.......
SIMBA# is the newest member of the SIMBA™ simulator family and provides a fully integrated simulation platform for run-off, sewer systems, WWTPs and rivers. SIMBA# is a stand-alone simulator which takes urban wastewater system design and optimisation to another level. Key functionalities include:• full and on-line connectivity between all sub-systems......
ANSYS Fluent software contains the broad physical modeling capabilities needed to model flow, turbulence, heat transfer, and reactions for industrial applications ranging from air flow over an aircraft wing to combustion in a furnace, from bubble columns to oil platforms, from blood flow to semiconductor manufacturing, and from clean room......
HYDRUS is a software package for simulating water, heat, and solute movement in two- and three-dimensional variably saturated media. The software package consists of a computational computer program and an interactive graphics-based user interface.......
SimulationX is an interdisciplinary, multi-domain simulation software for the design, analysis and optimization of complex systems on a single platform. More than 500 ready-to-use model elements and over 300 examples of models from 11 application areas simplify and accelerate the modeling process. Within the shortest time possible, users obtain high-quality......
ANSYS AIM makes upfront simulation easy by combining intuitive, guided workflows, accurate simulation results and optimization in a complete simulation tool. Integrated geometry modeling based on ANSYS SpaceClaim technology helps you create new 3-D concept models, or edit/repair existing geometry. Whether a simulation includes electromagnetics, thermal, structures, or fluids or......
Naiad is a dynamics solver and a simulation framework capable of producing animations of dynamic bodies including: * liquids o large and small bodies of water o breaking waves o splashes and foam o accurate viscous liquids featuring buckling, coiling and bending motion o high degree of creative control while......
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