6.6.0 Chemical process simulator for Windows

Simulates and analyzes chemical processes, with tools and features for process design, optimization and analysis.

DWSIM is a free and open source chemical process simulation and education application developed by Daniel Medeiros for Windows. It's feature-rich, professional, advanced, comprehensive, customizable and powerful.

The download has been tested by an editor here on a PC and a list of features has been compiled; see below.


A chemical process emulator suitable for teachers and students

DWSIM is an and efficient and user-friendly chemical process simulator written in VB.NET, intended for beginners as well as more experienced chemical scientists.

The application provides users with advanced thermodynamic calculations, petroleum characterization and hypothetical components utilities, accessible through a fully-featured graphical user interface.

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.

Features of DWSIM

  • CAPE-OPEN features: Thermo 1.0/1.1 Property Package Socket, Thermo 1.1 Property Package Server, Unit Operation Socket and Flowsheet Monitoring Object support. Additionally, DWSIM exposes its IronPython/IronRuby Script (Custom) Unit Operation for all CAPE-OPEN compliant simulators.
  • Extras: Scripting System and Plugin Interface.
  • Process Analysis: Multivariate Constrained Optimization and Sensitivity Analysis utility.
  • Thermodynamic models: PC-SAFT, Peng-Robinson, Soave-Redlich-Kwong, Lee-Kesler, Lee-Kesler-Plocker, UNIFAC, Modified UNIFAC (Dortmund), UNIQUAC, NRTL, COSMO-SAC, LIQUAC*, Extended UNIQUAC, Chao-Seader, Grayson-Streed and Ideal Gas.
  • Tools: Binary Data Regression, Hypothetical Components Generator, Bulk C7 and Distillation Curves Petroleum Characterization, Reactions Manager and Component Creator.
  • Unit Operations: Mixer, Splitter, Separator, Pump, Compressor, Expander, Heater, Cooler, Valve, Pipe Segment, Shortcut Column, Heat Exchanger, Reactors, Component Separator, Orifice Plate, Distillation/Absorption Columns, Solids Separator, Cake Filter and Custom Unit Operation.
  • Utilities: Phase Envelope, Hydrate Calculations, Pure Component Properties, Critical Point, PSV Sizing, Vessel Sizing, Spreadsheet and Petroleum Cold Flow Properties.

Compatibility and License

DWSIM is a free application released under the GPLv3 license on Windows from educational software. With software released under the open source GPLv3 license, anybody can download, install, run and distribute the software with little in terms of restrictions. The latest version we have is 6.6.0 and is available to download here.

What version of Windows can DWSIM run on?

DWSIM can be used on a computer running Windows 11 or Windows 10. Previous versions of the OS shouldn't be a problem with Windows 8 and Windows 7 having been tested. It comes in both 32-bit and 64-bit downloads.

Filed under:
  1. DWSIM Download
  2. Free Educational Software
  3. Open source and GPL software
  4. Chemical Process Simulation Software
DWSIM has been picked by our editors as good software.
DWSIM has been tested for viruses and malware.
We have tested DWSIM 6.6.0 against malware with several different programs. We certify that this program is clean of viruses, malware and trojans.