BibSonomy ::  concept ::

2D Pre-Stack Depth Migration, 2D convolution for 3D wavefield extrapolation, 2D acoustic/visco-elastic finite difference wavefield modeling. Including tools for 2D gridded model building and wavelet definition.

SimulationX is a graphically-interactive tool for the holistic modeling, simulation and analysis of multi-domain systems from 1D to 3D. Multi-level customizing options and SimulationX’s capability to adjust the model’s complexity by mouse-click allow modeling in every step of the design process. Ready-to-use model libraries, e.g., for mechanics, multi-body systems, power transmission, hydraulics, pneumatics, thermodynamics, and electric drives are written in Modelica language. Libraries are extendable by Modelica-based modeling using the SimulationX TypeDesigner. A comprehensive API supports the integration into any CAE, CFD, CAD or database tool environment. Versatile interfaces offer plenty of opportunities for exporting models in terms of Simulink S-function and C-Code for HiL, RCP and other real-time applications. Different features (tracing, performance analyzer, switchable model complexity) support users in achieving real-time-capabilities.

High-Performance Physical Modeling and Simulation MapleSim is a physical modeling and simulation tool built on a foundation of symbolic computation technology. It efficiently handles all of the complex mathematics involved in the development of engineering models, including multi-domain systems, plant modeling, and control design. MapleSim reduces model development time from months to days while producing high-fidelity, high-performance models.

MathModelica makes it possible to develop advanced multi-engineering and life science models by simple drag & drop. MathModelica provides an environment for model based design, including support for modeling, simulation, analysis, and documentation.

EES ('ease') is a revolutionary program which will change the way you think and work. EES provides capabilities not found in any other equation solving program. EES will solve large sets of non-linear algebraic and differential equations. EES also provides publication-quality plots, linear and non-linear regression, optimization, unit conversion and consistency checking, and uncertainty analyses. Built-in functions are provided for thermodynamic and transport properties of many substances, including steam, air, refrigerants, cryogenic fluids, JANAF table gases, hydrocarbons and psychrometrics. Additional property data can be added. EES also allows user-written functions, procedures, modules, and tabular data. EES can also interface with REFPROP and other NIST fluid property programs. REFPROP provides the most advanced methods for estimating the properties of mixtures. The Professional version allows many other additional features including animation and the ability to make stand-alone programs.

gPROMS is an equation-oriented modelling system used for building, validating and executing first-principles models within a flowsheeting framework. Models are constructed in the gPROMS ModelBuilder by writing down the fundamental chemistry, physics, chemical engineering, operating procedures and other relationships that govern the process or product behaviour. The resulting model is then validated against observed data — typically, laboratory, pilot plant or operating data — to adjust model parameters such as heat transfer coefficients to match reality as closely as possible. Of course, you don't need to create a model from scratch every time – you can use one of the many state-of-the-art gPROMS model libraries, or create your own library for publishing throughout your organisation. Solution accuracy – for multiple applications The first-principles approach combined with rigorous validation results in models of unprecedented accuracy. Once a model exists, it can be solved in many different ways to perform many different activities – for example, steady-state simulation, dynamic simulation, parameter estimation, model-based experiment design, steady-state and dynamic optimisation, including integer optimisation, or generation of linearised models for use in control and online optimisation, across the process lifecycle. This means that once you have invested in creating an accurate gPROMS model of your process you can use that model wherever it can generate value, to ensure multiple return on investment. PSE ModelCare PSE recognises that creating high-accuracy process models requires expertise in many different domains – chemical engineering, physics, chemistry, hydrodynamics and modelling and numerical solution itself. That is why we provide the ModelCare service. ModelCare aims to help companies deliver fit-for purpose modelling applications rapidly, while transferring modelling know-how to customer organisations.

R is a language and environment for statistical computing and graphics. It is a GNU project which is similar to the S language and environment which was developed at Bell Laboratories (formerly AT&T, now Lucent Technologies) by John Chambers and colleagues. R can be considered as a different implementation of S. There are some important differences, but much code written for S runs unaltered under R. R provides a wide variety of statistical (linear and nonlinear modelling, classical statistical tests, time-series analysis, classification, clustering, ...) and graphical techniques, and is highly extensible. The S language is often the vehicle of choice for research in statistical methodology, and R provides an Open Source route to participation in that activity. One of R's strengths is the ease with which well-designed publication-quality plots can be produced, including mathematical symbols and formulae where needed. Great care has been taken over the defaults for the minor design choices in graphics, but the user retains full control. R is available as Free Software under the terms of the Free Software Foundation's GNU General Public License in source code form. It compiles and runs on a wide variety of UNIX platforms and similar systems (including FreeBSD and Linux), Windows and MacOS.

The aim of this project is to set up a tool composed of * a graphical Modelica editor, aimed at writing the plant model; * an editor for IEC 61131-3 languages (currently, the Ladder Diagram, Sequential Functional Chart and the Functional Block Diagram are being considered), aimed at writing the controller model; * a compiler to turn IEC 61131-3 code into executable code on selected target platforms; * a pre-compiler capable of translating both the plant and controller model in a single Modelica file, to be fed to any Modelica translator for simulation; * an interface to the OpenModelica compiler, for Modelica code parsing, compilation, and simulation; * a simulation output browser. SimForge is fully written in Java (thus crossplatform), uses the XML language as internal data format for maximum openness and transparency, and is entirely free software, released under the terms of the GPL license. It is the authors' intention to allow SimForge to operate with any Modelica compiler, so as to maximise its use and to have the maximum amount of feedback for improvement. Currently, SimForge works with the open source OpenModelica compiler. If you are not interested in IEC 61131-3 controller development, you can still use SimForge as a full-fledged, free, open-source graphical user interface to the OpenModelica compiler.