About DWSIM Simulator
DWSIM Simulator is a Steady-State Chemical Process Simulator, featuring: - Offline functionality: no need to connect to online databases or servers, DWSIM runs completely offline on your device, wherever you are! -...
DWSIM Simulator is a Steady-State Chemical Process Simulator, featuring: - Offline functionality: no need to connect to online databases or servers, DWSIM runs completely offline on your device, wherever you are! - Touch-enabled Process Flowsheet Diagram (PFD) Drawing Interface: A hardware-accelerated PFD interface with touch support allows Chemical Engineers to build complex process models in a few minutes - VLE/VLLE/SVLE/SVLLE calculations using Equation of State and Activity Coefficient models: calculate fluid properties and phase distribution with advanced thermodynamic models - Compound database with extensive data for more than 1500 compounds - Rigorous Thermodynamic Models*: PC-SAFT EOS, GERG-2008 EOS, Peng-Robinson EOS, Soave-Redlich-Kwong EOS, Lee-Kesler-Plöcker, Chao-Seader, Modified UNIFAC (Dortmund), UNIQUAC, NRTL, Wilson, Raoult's Law and IAPWS-IF97 Steam Tables - Thermophysical state (phase) properties: Enthalpy, Entropy, Internal Energy, Gibbs and Helmholtz Free Energies, Compressibility Factor, Isothermal Compressibility, Bulk Modulus, Speed of Sound, Joule-Thomson Expansion Coefficient, Density, Molecular Weight, Heat Capacity, Thermal Conductivity and Viscosity - Single-compound properties: Critical Parameters, Acentric Factor, Chemical formula, Structure formula, CAS Registry Number, Boiling Point Temperature, Vapor Pressure, Heat of Vaporization, Ideal gas Enthalpy, Ideal gas Enthalpy of Formation at 25 C, Ideal Gas Gibbs Free Energy of Formation at 25 C, Ideal Gas Entropy, Heat Capacity Cp, Ideal Gas Heat Capacity, Liquid Heat Capacity, Solid Heat Capacity, Heat Capacity Cv, Liquid Viscosity, Vapor Viscosity, Liquid Thermal Conductivity, Vapor Thermal Conductivity, Solid Density, Liquid Density and Molecular Weight - Comprehensive Unit Operation Model set*, including Mixer, Splitter, Separator, Pump, Compressor, Expander, Heater, Cooler, Valve, Shortcut Column, Heat Exchanger, Component Separator, Pipe Segment, Rigorous Distillation and Absorption Columns, Wind Turbine, Hydroelectric Turbine, Water Electrolyzer and Solar Panel - Support for Chemical Reactions and Reactors*: DWSIM features support for Conversion, Equilibrium and Kinetic reactions, together with their respective Reactor models - Flowsheet Parametric Studies: Use the Sensitivity Analysis Tool to run automated parametric studies on your process model; The Flowsheet Optimizer tool can bring the simulation to an optimum state according to user-defined criteria; The Calculator tool can read flowsheet variables, perform math operations on them and write the results back to the flowsheet - Petroleum Characterization: Bulk C7+ and TBP Distillation Curve characterization tools enable creation of pseudocompounds to simulate petroleum processing facilities - Parallel multicore CPU calculation engine: a fast and reliable flowsheet solver that takes advantage of the multicore CPUs on modern mobile devices - Save/Load XML simulation files on the device or in the cloud - Export simulation results to PDF and Text documents * Some items are available through in-app purchases ABOUT CHEMICAL PROCESS SIMULATION Chemical Process Simulation is a model-based representation of chemical, physical, biological, and other technical processes and unit operations in software. Basic prerequisites are a thorough knowledge of chemical and physical properties of pure components and mixtures, of reactions, and of mathematical models which, in combination, allow the calculation of a process in a computing device. Process simulation software describes processes in flow diagrams where unit operations are positioned and connected by product or educt streams. The software has to solve the mass and energy balance to find a stable operating point. The goal of a process simulation is to find optimal conditions for a process.
Version History - [FREE] New Wilson Property Package - [FREE] New Water Electrolyzer Unit Operation - [FREE] New Hydroelectric Turbine Unit Operation - [FREE] New Wind Turbine Unit Operation - [FREE] New Solar Panel Unit Operation - Updated phase equilibria calculation subsystem to match DWSIM for Desktop - Updated Rigorous Column model to match DWSIM for Desktop - Added Modern and Black-and-White Flowsheet Themes - Bug fixes and minor enhancements 5.0.0 03/21/2024 - PFR: User-Defined Pressure Drop - PFR: Define the Number of Tubes - Enhanced stability of PT Flash - Fixed PFR Pressure Drop calculation - Fixed a bug in Conversion Reactor 4.2.0 05/12/2023 - New 'Auto-Connect Added Objects' feature - Fixed an issue with Conversion Reactor 4.1.0 03/08/2022 - New Flat Color Flowsheet Theme - Overall reliability enhancements to Equilibrium Flash Calculations - Fixed Adiabatic Calculation mode in Gibbs and Equilibrium Reactors - Fixed Conversion Reactor - Enhanced Distillation Column Solver, now supports all specification types - Other bug fixes and enhancements 4.0.0 01/29/2022 Fixed a bug with Material Stream cloning 3.3.11 01/19/2021 - Fixed an issue with the Rigorous Distillation Column model - Fixed an issue with the Pressure-Enthalpy Flash 3.3.10 01/04/2021 Fixed missing PR/SRK EOS Interaction Parameters 3.3.8 09/23/2020 - Fixed Head and Efficiency calculation for Compressor/Expander model - Fixed some bugs with Absorption/Distillation Column model - Minor bug fixes 3.3.7 05/19/2020 - Added Polytropic path and Head calculation mode to Compressor/Expander - Added missing units selector for exported Calculator expressions - Minor bug fixes 3.3.6 03/05/2020 Bug fixes 3.3.5 01/23/2020 - Added the ability to use and modify initial estimates for Rigorous Columns - Fixed some sample simulations not working - Fixed Absorption Column in LL Extraction mode - Other bug fixes 3.3.4 01/16/2020 Fixed compatibility with older iOS versions 3.3.3 01/12/2020 Bug fixes 3.3.2 10/27/2019 - Fixed Valve Steam/Gas Kv calculation mode 3.3.1 10/21/2019 - Dark Mode - Implemented Reaction Set Functionality - Enhanced Reliability of the Liquid Phase Stability Check Algorithm - Enhanced Initialization of Absorber Column in Liquid-Liquid Extractor Mode 3.3.0 10/17/2019 - New PC-SAFT Property Package - New GERG-2008 Property Package - New Flowsheet Object Cloning capability - Bug fixes 3.2.0 07/19/2019 - Fixed Valve calculation in Kv mode - Using the dot as decimal separator on input fields and result reports 3.1.6 06/06/2019 Fixed not being able to dismiss property table editors 3.1.5 05/13/2019 Bug fixes 3.1.4 05/03/2019 - Bug fixes 3.1.3 05/02/2019 - New Structured Result Reports for selected Flowsheet Objects - New CoolProp Incompressible Fluids Property Package - New CoolProp Incompressible Mixtures Property Package - Added New Features to Phase/Binary Envelope Utilities - Updated ChemSep Database - Updated ChEDL Database - Bug Fixes 3.1.0 04/26/2019 Added 'Restore Previous Purchases' functionality. 3.0.3 02/25/2019 Fixed Mixer and Splitter not being added to the flowsheet when the renderer is set to 'Software (CPU)'. 3.0.2 02/19/2019 - Fixed crashes on iOS 9/10 - Fixed 'Report a Bug' functionality - Added an option to copy property table data to clipboard 3.0.1 02/01/2019 - New User Interface - Fixed issues with Gibbs and Equilibrium Reactors - New SVLLE Flash Algorithm - Other minor fixes and enhancements 3.0.0 12/18/2018
Previous Versions
Here you can find the changelog of DWSIM Simulator since it was posted on our website on 2021-12-23 06:13:57.
The latest version is 5.0.0 and it was updated on 2026-06-10 05:17:09. See below the changes in each version.
DWSIM Simulator version 5.0.0
Updated At: 2026-06-10
Changes: Version History - [FREE] New Wilson Property Package
- [FREE] New Water Electrolyzer Unit Operation
- [FREE] New Hydroelectric Turbine Unit Operation
- [FREE] New Wind Turbine Unit Operation
- [FREE] New Solar Panel Unit Operation
- Updated phase equilibria calculation subsystem to match DWSIM for Desktop
- Updated Rigorous Column model to match DWSIM for Desktop
- Added Modern and Black-and-White Flowsheet Themes
- Bug fixes and minor enhancements 5.0.0 03/21/2024 - PFR: User-Defined Pressure Drop
- PFR: Define the Number of Tubes
- Enhanced stability of PT Flash
- Fixed PFR Pressure Drop calculation
- Fixed a bug in Conversion Reactor 4.2.0 05/12/2023 - New 'Auto-Connect Added Objects' feature
- Fixed an issue with Conversion Reactor 4.1.0 03/08/2022 - New Flat Color Flowsheet Theme
- Overall reliability enhancements to Equilibrium Flash Calculations
- Fixed Adiabatic Calculation mode in Gibbs and Equilibrium Reactors
- Fixed Conversion Reactor
- Enhanced Distillation Column Solver, now supports all specification types
- Other bug fixes and enhancements 4.0.0 01/29/2022 Fixed a bug with Material Stream cloning 3.3.11 01/19/2021 - Fixed an issue with the Rigorous Distillation Column model
- Fixed an issue with the Pressure-Enthalpy Flash 3.3.10 01/04/2021 Fixed missing PR/SRK EOS Interaction Parameters 3.3.8 09/23/2020 - Fixed Head and Efficiency calculation for Compressor/Expander model
- Fixed some bugs with Absorption/Distillation Column model
- Minor bug fixes 3.3.7 05/19/2020 - Added Polytropic path and Head calculation mode to Compressor/Expander
- Added missing units selector for exported Calculator expressions
- Minor bug fixes 3.3.6 03/05/2020 Bug fixes 3.3.5 01/23/2020 - Added the ability to use and modify initial estimates for Rigorous Columns
- Fixed some sample simulations not working
- Fixed Absorption Column in LL Extraction mode
- Other bug fixes 3.3.4 01/16/2020 Fixed compatibility with older iOS versions 3.3.3 01/12/2020 Bug fixes 3.3.2 10/27/2019 - Fixed Valve Steam/Gas Kv calculation mode 3.3.1 10/21/2019 - Dark Mode
- Implemented Reaction Set Functionality
- Enhanced Reliability of the Liquid Phase Stability Check Algorithm
- Enhanced Initialization of Absorber Column in Liquid-Liquid Extractor Mode 3.3.0 10/17/2019 - New PC-SAFT Property Package
- New GERG-2008 Property Package
- New Flowsheet Object Cloning capability
- Bug fixes 3.2.0 07/19/2019 - Fixed Valve calculation in Kv mode
- Using the dot as decimal separator on input fields and result reports 3.1.6 06/06/2019 Fixed not being able to dismiss property table editors 3.1.5 05/13/2019 Bug fixes 3.1.4 05/03/2019 - Bug fixes 3.1.3 05/02/2019 - New Structured Result Reports for selected Flowsheet Objects
- New CoolProp Incompressible Fluids Property Package
- New CoolProp Incompressible Mixtures Property Package
- Added New Features to Phase/Binary Envelope Utilities
- Updated ChemSep Database
- Updated ChEDL Database
- Bug Fixes 3.1.0 04/26/2019 Added 'Restore Previous Purchases' functionality. 3.0.3 02/25/2019 Fixed Mixer and Splitter not being added to the flowsheet when the renderer is set to 'Software (CPU)'. 3.0.2 02/19/2019 - Fixed crashes on iOS 9/10
- Fixed 'Report a Bug' functionality
- Added an option to copy property table data to clipboard 3.0.1 02/01/2019 - New User Interface
- Fixed issues with Gibbs and Equilibrium Reactors
- New SVLLE Flash Algorithm
- Other minor fixes and enhancements 3.0.0 12/18/2018
DWSIM Simulator version 5.0.0
Updated At: 2024-03-21
Changes: - [FREE] New Wilson Property Package
- [FREE] New Water Electrolyzer Unit Operation
- [FREE] New Hydroelectric Turbine Unit Operation
- [FREE] New Wind Turbine Unit Operation
- [FREE] New Solar Panel Unit Operation
- Updated phase equilibria calculation subsystem to match DWSIM for Desktop
- Updated Rigorous Column model to match DWSIM for Desktop
- Added Modern and Black-and-White Flowsheet Themes
- Bug fixes and minor enhancements
DWSIM Simulator version 5.0.0
Updated At: 2024-03-21
Changes: Mar 21, 2024
Version 5.0.0
- [FREE] New Wilson Property Package
- [FREE] New Water Electrolyzer Unit Operation
- [FREE] New Hydroelectric Turbine Unit Operation
- [FREE] New Wind Turbine Unit Operation
- [FREE] New Solar Panel Unit Operation
- Updated phase equilibria calculation subsystem to match DWSIM for Desktop
- Updated Rigorous Column model to match DWSIM for Desktop
- Added Modern and Black-and-White Flowsheet Themes
- Bug fixes and minor enhancements
DWSIM Simulator version 4.2.0
Updated At: 2023-05-12
Changes: May 12, 2023
Version 4.2.0
- PFR: User-Defined Pressure Drop
- PFR: Define the Number of Tubes
- Enhanced stability of PT Flash
- Fixed PFR Pressure Drop calculation
- Fixed a bug in Conversion Reactor
DWSIM Simulator version 4.1.0
Updated At: 2022-03-08
Changes: Mar 8, 2022 Version 4.1.0
- New 'Auto-Connect Added Objects' feature
- Fixed an issue with Conversion Reactor
DWSIM Simulator version 4.0.0
Updated At: 2022-01-29
Changes: Jan 29, 2022
Version 4.0.0
- New Flat Color Flowsheet Theme
- Overall reliability enhancements to Equilibrium Flash Calculations
- Fixed Adiabatic Calculation mode in Gibbs and Equilibrium Reactors
- Fixed Conversion Reactor
- Enhanced Distillation Column Solver, now supports all specification types
- Other bug fixes and enhancements
DWSIM Simulator version 3.3.11
Updated At: 2021-01-19
Changes: Jan 19, 2021 Version 3.3.11
Fixed a bug with Material Stream cloning
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