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DWSIM is a Chemical Process Simulator for Windows, Linux and Mac. Built for the Microsoft .NET 2.0 and Mono Platforms and featuring a rich Graphical User Interface (GUI), DWSIM allows chemical engineering students and chemical engineers to better understand the behavior of their chemical systems by using rigorous thermodynamic and unit operations' models with no cost at all. Even better, they can see how the calculations are actually being done - DWSIM is open source, that is, its code is available to anyone who wishes to discover the "magic" behind it or just do some code browsing.

DWSIM is intended for both chemical engineering students and professional chemists, allowing them to run simulations and get a better understanding on a phenomenon. Its main advantage is that it allows them to conduct experiments and analyze data using advanced models and operations, without any cost. The simulator enables you to manage the material streams and design a schematic representation of the entire mechanism with the help of the rich object library. The result can be easily sent to the clipboard and pasted in other programs as and image. It features automatic error detection, customizable parameters for each item and PH calculation for all the compounds.

DWSIM is capable of generating distillation curves petroleum characterizations and helps you create new compounds that can be used in experiments, along with the existing ones. Also, it can be used for performing data regression studies for two compounds using various thermodynamics models and methods, generating conclusive graphs that can be exported to other applications.

FEATURES:

Thermodynamic Models: Peng-Robinson, Peng-Robinson with Volume Translation, Soave-Redlich-Kwong, Lee-Kesler, UNIFAC, Modified UNIFAC (Dortmund), UNIQUAC, NRTL, Chao-Seader, Grayson-Streed and Ideal Gas.
Unit Operations: Mixer, Splitter, Separator, Pump, Compressor, Expander, Heater, Cooler, Valve, Pipe Segment, Shortcut Column, Heat Exchanger, Conversion Reactor, Equilibrium Reactor, PFR, CSTR, Distillation Column, Simple, Refluxed and Reboiled Absorbers.
DWSIM also provides special information about the simulation and different means of inputting user data through Utilities and Tools:
Utilities: Phase Envelope, Hydrate Calculations, Pure Component Properties, True Critical Point, PSV Sizing, Vessel Sizing, Spreadsheet and Petroleum Cold Flow Properties
Tools: Hypothetical Component Generator, Bulk C7+/Distillation Curves Petroleum Characterization, Reactions Manager and User Component Creator
Process Analysis and Optimization: Sensitivity Analysis Utility, Multivariate Optimizer with bound constraints.