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DWSIM Changelog

What's new in DWSIM 3.7 Build 5901

Feb 29, 2016
  • [NEW] Added Undo/Redo capability for Flowsheet Objects, Compounds and Property Packages
  • [NEW] Added cross-simulation Cut/Copy/Paste capability for Flowsheet Objects
  • [NEW] New 'Edit' menu
  • [NEW] Added data copy button to Spreadsheet and Material Stream list (Mono only)
  • [NEW] Added SRK fugacity GPU calc routine
  • [CHG] Minor changes and UI enhancements
  • [FIX] Fixed Spreadsheet UO calculation taking too long to finish
  • [FIX] Fixed Nested Loops PT/PV Flash mismatch for single-compound mixtures
  • [FIX] General bug fixes

New in DWSIM 3.6 Build 5884 (Feb 11, 2016)

  • [FIX] Performance enhancements and bug fixes

New in DWSIM 3.6 Build 5876 (Feb 11, 2016)

  • [NEW] DWSIM now runs in 64-bit mode on 64-bit operating systems. To run in 32-bit mode, start "DWSIM_32.bat"
  • [NEW] New Pipe calculation modes: Specify Outlet Pressure / Outlet Temperature
  • [NEW] Sour Water Property Package
  • [CHG] Updated User Interface
  • [CHG] Enabled CoolProp Property Package for 64-bit Linux
  • [CHG] Changed XML report style
  • [FIX] Various stability enhancements and bug fixes when running in Mono mode

New in DWSIM 3.4 Build 5608 (May 15, 2015)

  • NIST-MODFAC Property Package (http://trc.nist.gov/TDE/Help/TDE103b/NIST-Modified-UNIFAC-AC-Model.htm)
  • Model Comparison in Binary Enevelope Utility
  • New Flowsheet Solver modes
  • Linked Spreadsheet Table
  • Activate/Deactivate Flowsheet Objects
  • Added Input and Output Variables to Custom (Script) Unit Operation
  • Restore previous successful flowsheet solutions
  • Equilibrium calculations now use Henry coefficients for non-condensables
  • Added support for CAPE-OPEN Array Parameter type
  • Mouse double-click now opens specific windows for some unit operations
  • Added window docking menu for Mono compatibility
  • Export simulation compounds to XML user database
  • Excel UO is now Spreadsheet UO, supports ODS files and runs on Linux
  • Speed enhancements for calculations with UNIFAC-type Property Packages
  • Flash Algorithm "Fast" option is now a Property Package parameter
  • Changed Flowsheet UO subflowsheet display mode to dockable
  • Parallelized phase identification routine loop
  • Optimized Recycle code
  • Improved Lee-Kesler root finding
  • New object palette icons
  • Corrected some Hydrate calculation models
  • Fixed GPU multithreading lockups
  • Fixed Sum Rates Absorption Column solver
  • Minor bug fixes and enhancements

New in DWSIM 3.3 Build 5517 (Feb 9, 2015)

  • NEW Flowsheet Unit Operation
  • NEW Redesigned Nested Loops VLLE flash algorithm
  • NEW Fast/Rigorous option mode for Nested Loops VLE flash algorithm
  • NEW Timed simulation script events
  • NEW Updated Plugin Interface (IUtilityPlugin2), includes new generic function which can be called by scripts
  • CHG Updated/Redesigned CoolProp interface
  • CHG Autosave scripts when saving flowsheet
  • FIX Fixed Heat of Vaporization calculation for ChemSep compounds
  • FIX Fixed bugs in the PSV sizing utility
  • FIX General bug fixes and code optimizations

New in DWSIM 3.3 Build 5488 (Jan 13, 2015)

  • NEW Excel Unit Operation
  • NEW IronPython Script Manager
  • CHG Flowsheet drawing optimizations
  • CHG Added Energy Stream requirement to Vessel UO to maintain energy balance consistency
  • CHG Added a confirmation message to add units systems from simulation files
  • CHG Sensitivity Analysis Utility GUI adjustments
  • CHG CAPE-OPEN Property Package adjustments
  • CHG Added Material Stream's phase mole flow information to property grid
  • FIX (T)xy, (P)xy binary diagram fixes
  • FIX Fixed Command Line mode issues
  • FIX Fixed bugs in the Compound Creator utility
  • FIX Fixed Rigorous Column stage naming
  • FIX Fixed proxy settings for new version check
  • FIX Fixed isolated Material Stream not calculating with "Calculate All" command
  • FIX Minor bug fixes

New in DWSIM 3.2 Build 5398 (Oct 18, 2014)

  • CHG - Cleaned exception information in log window
  • FIX - General fixes to Parallel CPU/GPU calculations
  • FIX - General fixes and stability enhancements to Three-Phase Flash Algorithms
  • FIX - Fixed Interaction Parameter XML restoring bug
  • FIX - Fixed Recycle Op not updating mole flows
  • FIX - Fixed a report display bug in CAPE-OPEN Unit Operation Version 3.2 Build 5390 - NEW - Triangular LLE Phase Envelope Utility
  • NEW - User Compound Database Management Tool
  • NEW - Material Stream data copy through the PFD context menu
  • NEW - Added Enthalpy/Entropy/Cp calculation method selection to Activity oefficient-based Property Packages.
  • NEW - Added support for hydrate calculations in equilibrium with gas phase only
  • NEW - New interpolation methods for distillation column initial estimates of temperature, vapor and liquid flows
  • CHG - Pure Component Property Viewer improvements
  • CHG - Updates to Help system
  • CHG - Updates to stability tests on three-phase flash algorithms
  • FIX - Implemented missing methods for XML saving/loading of Watch Items
  • FIX - Fixed bugs in the Electrolytes subsystem
  • FIX - Gibbs Reactor model fixes
  • FIX - Minor bug fixes and UI tweaks

New in DWSIM 3.2 Build 5390 (Oct 6, 2014)

  • [NEW] Triangular LLE Phase Envelope Utility
  • [NEW] User Compound Database Management Tool
  • [NEW] Material Stream data copy through the PFD context menu
  • [NEW] Added Enthalpy/Entropy/Cp calculation method selection to Activity Coefficient-based Property Packages.
  • [NEW] Added support for hydrate calculations in equilibrium with gas phase only
  • [NEW] New interpolation methods for distillation column initial estimates of temperature, vapor and liquid flows
  • [CHG] Pure Component Property Viewer improvements
  • [CHG] Updates to Help system
  • [CHG] Updates to stability tests on three-phase flash algorithms
  • [FIX] Implemented missing methods for XML saving/loading of Watch Items
  • [FIX] Fixed bugs in the Electrolytes subsystem
  • [FIX] Gibbs Reactor model fixes
  • [FIX] Minor bug fixes and UI tweaks

New in DWSIM 3.2 Build 5349 (Aug 25, 2014)

  • [NEW] Implemented Pressure-Enthalpy (PH) and Pressure-Vapor Fraction (PVF) Flash algorithms for Electrolyte Property Packages
  • [NEW] Added an option to restore Material Streams' default properties
  • [NEW] Added "Ignore Vapor Phase" property to the Tank Unit Op
  • [CHG] Changed Units System persistence to XML format
  • [CHG] Updated calculation procedures in the Petroleum Cold Flow Properties utility
  • [CHG] Steam Tables Property Package now works with Water compound from ChemSep database
  • [FIX] Restored table property values after loading simulation from a XML file
  • [FIX] Minor bug fixes

New in DWSIM 3.2 Build 5309 (Jul 23, 2014)

  • [NEW] Added hydrate calculation method option to the phase envelope utility
  • [CHG] Enhanced hydrate models to correctly support hydrocarbons that don't form hydrates

New in DWSIM 3.2 Build 5296 (Jul 3, 2014)

  • [NEW] New Phase Identification Algorithm based on the work of Venkatarathnam et al (http://dx.doi.org/10.1016/j.fluid.2010.12.001)
  • [NEW] Enhanced Phase Envelope Utility now shows hydrate curves, dry-basis dew points for wet natural gas mixtures and phase identification boundary for PR and SRK EOS
  • [NEW] Added Motor Octane Number (MON) and Methane Number (MN) properties to the Natural Gas Properties Plugin
  • [NEW] New flash calculation spec added to the Separator Vessel model
  • [CHG] Enhanced NRTL/UNIQUAC interaction parameter estimation procedures, can now estimate temperature dependency
  • [CHG] Enhanced flash algorithm initialization
  • [CHG] All three-phase flash algorithms now calculate true tree-phase saturation points if required
  • [CHG] Enhanced Hydrate Formation Utility with faster calculation times and ChemSep compound support
  • [CHG] Updated UNIFAC/MODFAC Property Packages' configuration dialog with UNIFAC group information
  • [FIX] Fixed reporting tool
  • [FIX] Minor bug fixes

New in DWSIM 3.1 Build 5265 (Jun 5, 2014)

  • [FIX] Mono Runtime compatibility fixes
  • [FIX] Fixed Spreadsheet bugs
  • [FIX] Fixed bugs in the Adjust and Set logical operations
  • [FIX] Fixed PV/TV Flash temperature search limits
  • [FIX] Fix for sensitivity analysis window resizing
  • [CHG] Updated quickview table
  • [CHG] Fixed zoom level of the quickview table at 100%

New in DWSIM 3.0 Build 5031 (Apr 1, 2014)

  • [NEW] New Unit Operations for Solid-handling simulations: Solids Separator and Continuous Cake Filter
  • [NEW] Unified code base and single executable for .NET/Mono, compiled for CLR v4.0
  • [NEW] New XML simulation file format for full compatibility between platforms (Windows/Linux/OS X)
  • [NEW] New Parallel Calculations engine with support for multicore CPUs and CUDA/OpenCL-capable GPUs
  • [NEW] 'Copy Data to Clipboard' function added to flowsheet objects
  • [CHG] Stability enhancements to Rigorous Column model and Boston-Britt Inside-Out solver
  • [CHG] Report tool now fully supports Excel Spreadsheet file format
  • [CHG] Added more material stream composition input options: Mass/Mole Flows, Standard Liquid Volumetric Fractions, Molarity and Molality (for electrolyte simulations)
  • [CHG] Mixer and Separator Vessel models now supports up to six inlet streams
  • [CHG] NRTL/UNIQUAC Interaction Parameters are now temperature-dependent
  • [CHG] All Activity coefficient models now include an option to model the Vapor Phase as ideal. The Data Regression utility also supports this option in order to regress data to find the interaction parameters accordingly
  • [CHG] The Compound Creator was enhanced to include more Joback/UNIFAC groups, Element information and Solid Phase properties estimation, including temperature-dependent ones (Cp, Density). The regression graphs now show calculated properties for every temperature dependent property
  • [CHG] Phase Envelope utilities now have cancellation support
  • [CHG] The Binary Envelope Utility was enhanced to show every kind of equilibrium line supported by DWSIM (VLE, LLE, SLE and Critical)
  • [CHG] The Data Regression utility now supports fixing some interaction parameters, enhanced LLE /SLE regression
  • [CHG] The Pure Compound Property viewer now includes molecular properties, solid properties and property tables

New in DWSIM 2.1 Build 4513 (May 11, 2012)

  • General fixes and enhancements for the flash algorithms that increases their reliability and stability.

New in DWSIM 2.1 Build 4466 (Mar 31, 2012)

  • [FIX] Fixed calculation of ideal gas heat capacity for petroleum fractions
  • [FIX] Fixed distillation curves petroleum charact. utility

New in DWSIM 2.1 Build 4438 (Feb 29, 2012)

  • [CHG] Changed Adjust variables' units to match the ones in the selected system
  • of units
  • [FIX] Fixed custom system of units not being restored
  • [FIX] Fixed Adjust behavior
  • [FIX] Fixed Steam Tables Property Package PVF/TVF stream spec calculation
  • [FIX] Fixed Bubble and Dew points not being shown if the stream state is single
  • phase
  • [FIX] Fixed duplicate Separator Op in the Object Palette

New in DWSIM 2.1 Build 4422 (Feb 15, 2012)

  • [CHG] Overall speed and usability improvements
  • [NEW] Added drag-and-drop support for opening simulations/cases

New in DWSIM 2.1 Build 4416 (Feb 6, 2012)

  • [CHG] Includes ChemSep Lite 6.90, now with 400+ compound database and 40 compounds/300 stages Column model
  • [NEW] Includes PRSV2 Property Package with Van Laar-type mixing rule (original PRSV2 w/ Margules MR is now PRSV2-M)
  • [FIX] Fixed PRSV2 compresibility factor calculation

New in DWSIM 2.0 Build 4235 (Aug 8, 2011)

  • It includes a fix for the shell and tube heat exchanger shell side pressure drop calculation, adds a password-protect feature for simulation files and changes the PFD to centralize objects, giving the impression of an infinite area (like HYSYS/UNISIM Design).

New in DWSIM 2.0 Build 4207 (Jul 11, 2011)

  • [NEW] Support for Managed (100% .NET code) CAPE-OPEN Unit Operations
  • [NEW] Inside-Out Three-Phase (VLLE) Flash Algorithm
  • [NEW] PC-SAFT (without association term) Property Package
  • [NEW] UNIFAC Property Package with Liquid-Liquid interaction parameters
  • [NEW] Liquid-Liquid Extractor operation mode for the Absorption Column
  • [NEW] Three-Phase separation mode for the Vessel
  • [NEW] Watch window - allows property monitoring from different objects at the same time
  • [NEW] Updated flowsheet drawing theme available and downloads the setup file
  • [FIX] General bug fixes and speed improvements

New in DWSIM 1.8 Build 4101 (Mar 26, 2011)

  • [NEW] 'Fouling Factor' calculation mode for the Heat Exchanger Shell and Tube model
  • [NEW] Added non-linear solver IPOPT to the Optimizer
  • [NEW] DWSIM now reads experimental liquid density and liquid thermal conductivity data for ChemSep components (enabled by default)
  • [NEW] Added multiple selection capability to the flowsheet to enable moving multiple objects at once
  • [NEW] Added a 'Snap to Grid' capability to the flowsheet for better object alignment
  • [CHG] Reactivated flowsheet navigation through the arrow keys
  • [CHG] Reactivated the quick connect tool on the flowsheet
  • [CHG] General Heat Exchanger model improvements
  • [FIX] Fixed 'lbmol/h' unit conversion from SI to English

New in DWSIM 1.8 Build 4089 (Mar 14, 2011)

  • Spreadsheet Tool re-enabled for Mono Edition
  • IO Flash 'Fast Mode' re-enabled for Mono Edition
  • General Exception Handler re-enabled for Mono Edition
  • Fixed unhandled exceptions when using petroleum characterization and hypo generation tools
  • Property Package configuration window is now working correctly

New in DWSIM 1.8 Build 4080 (Mar 9, 2011)

  • [NEW] Model for Rating of Shell and Tube Heat Exchangers
  • [NEW] Scripting support for pre- and post- Unit Op calculations
  • [NEW] Console Output and Calculation Queue windows
  • [NEW] "Fast mode" switch for Inside-Out Flash calculations