[DanW]

Hi all,

DWSIM 2.1 for Windows was released, including a binary data regression utility, two PRSV2 Property Packages and ChemSep Lite 6.90 (now with 400 compounds and column model supporting 40 compounds and 300 stages). List of changes since version 2.0:

- [NEW] Includes PRSV2 Property Package with Van Laar-type mixing rule (original PRSV2 w/ Margules MR is now PRSV2-M)
- [NEW] New Property Package: Peng-Robinson-Stryjek-Vera 2 (PRSV2)
- [NEW] Added the Compound Creator Utility and corresponding user database structure
- [NEW] Added a Binary Data Regression utility
- [NEW] Added feature request #3409646 (Name given to Material Objects)
- [CHG] Rewritten solver logic increases calculation speed by 35% (Cavett sample)
- [CHG] Includes ChemSep Lite 6.90, now with 400+ compound database and 40 compounds/300 stages Column model
- [CHG] Enhanced Unit Set Creator to start with units from the current system
- [CHG] Added LLE support and initial estimates calculation using UNIFAC structure to the Data Regression Utility
- [CHG] Changed density input from Specific Gravity to API Gravity on the Dist. Curves Characterization Utility
- [FIX] Fixed solver not recalculating outlet streams
- [FIX] Fixed infinite volumetric flow on first Material Stream calculation through the property grid
- [FIX] Fixed Adjust and Spec Ops not showing anything on the property grid
- [FIX] Fixed Lee-Kesler Cp/Cv calculation
- [FIX] Fixed Distillation Curves Petroleum Characterization Utility
- [FIX] Fixed Pipe Segment model overall HTC calculation and liquid phase volume retrieval
- [FIX] Fixed Spanish translation of the Object Palette
- [FIX] Fixed bug #3409641 (Call to Terminate missing)
- [FIX] Fixed bug #3409637 (Collection Count method called twice in a row)
- [FIX] Fixed bug #3409628 (ICapeUtilities queried twice in a row)

For more details and links to installer, docs and tutorials, go to http://sourceforge.net/apps/mediawiki/dwsim/index.php?title=Main_Page

Thanks,
Daniel

[DanW]

Hello my friends,

An update for DWSIM 2.1 for Windows, Linux and OS X was released. This is the list of changes since Build 4466:

Version 2.1 Build 4606

- [CHG] COSMO-SAC database loading is now done only on-demand instead of during startup
- [CHG] Petalas-Aziz pressure drop model now uses a native library by the authors

Version 2.1 Build 4605

- [NEW] Simultaneous Adjust Solver
- [NEW] Added the option to edit pure compound properties through the Pure Compound Properties utility
- [NEW] Added automatic calculation of PR and SRK Peneloux volume translation (shift) coefficients for pseudocomponents
- [FIX] Several fixes to the Pipe Segment (and pressure drop) model, includes Joule-Thomson cooling option
- [FIX] Fixed drawing of Adjust's line connectors

Version 2.1 Build 4602

- [NEW] Added Peneloux volume translation support for PR and SRK Property Packages (Configure Property Package > General Options > Use Peneloux Volume translation => set to 1)
- [FIX] Fixed material stream composition editing in commmand line mode
- [FIX] Fixed ambient temperature not being set on Thermal Profile Editor (Pipe Segment)

Version 2.1 Build 4589

- [CHG] Enabled calculation of material streams when there is no mass/mole flow
- [FIX] Fixed mixer calculation when some of the inlet streams have no flow
- [FIX] Fixed a bug with the mass balance in the gas-liquid separator

Version 2.1 Build 4569

- [NEW] Save/Restore simulation states
- [NEW] Capture flowsheet snapshot and send to clipboard
- [FIX] Fixed command line run mode
- [FIX] Fixed heat capacity coefficients generated by the Compound Creator
- [FIX] Minor fixes to petroleum charact. utilities

Version 2.1 Build 4534

- [FIX] More fixes and enhancements to the flash algorithms
- [FIX] Fixed a bug in the excel interface
- [NEW] Added "reset settings" functionality by pressing Shift during startup

Version 2.1 Build 4526

- [NEW] Added Lua scripting support
- [FIX] Further fixes and improvements to the flash algorithms
- [FIX] Fixed ChemSep column operation with pseudocomponents/hypotheticals
- [FIX] Fixed Zc/Vc calculation for pseudocomponents
- [FIX] Fixed some bugs in the CAPE-OPEN Thermo interfaces

Version 2.1 Build 4513

- [FIX] Enhanced stability and reliability for Pressure-Enthalpy flash calculations

Version 2.1 Build 4503

- [NEW] FPROPS Property Package (needs testing)
- [NEW] Gibbs Minimization (experimental stage!), Hybrid Nested Loops / Inside Out flash algorithms
- [NEW] Added convergence information (error value, time taken and iteration count) for all flash algorithms
- [FIX] Fixed IO PH/PS flash calculation for single compounds
- [FIX] Fixed Property Grid issues with some unit operations and Spanish language
- [FIX] Fixed a bug with energy stream connection to rigorous columns

Version 2.1 Build 4466

- [NEW] Added custom object ordering feature to the Master Table
- [NEW] Added more mole flow units of measure
- [NEW] Added the possibility of removing multiple compounds from the simulation at once
- [FIX] Fixed ChemSep database registry search
- [FIX] Minor translation fixes

Version 2.1 Build 4463

- [FIX] Fixed calculation of ideal gas heat capacity for petroleum fractions

Version 2.1 Build 4452

- [NEW] Petroleum Assay Manager (store/reload/import/export bulk and distillation characterization assay data)
- [NEW] Master Property Table object ordering by property or name ascending/descending
- [NEW] PFD Zoom All, Pan (Shift + Left mouse button)
- [NEW] Area unit conversion to the Heat Exchanger
- [FIX] Fixed PFD Select and Center Object

Version 2.1 Build 4442

- [NEW] Added the Master Property Table to display grouped properties from objects of the same type
- [NEW] Added save-to-image flowsheet feature
- [NEW] Added bubble and dew points to Material Stream's property list
- [NEW] Added the capability of editing custom system of units
- [NEW] Added a keyboard shortcut (Ctrl+E) to edit material stream compositions
- [NEW] Added the capability of showing/hiding table items from the Property Grid

Version 2.1 Build 4438

- [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 Flowsheet printing
- [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 WFP donation window always showing
- [FIX] Fixed duplicate Separator Op in the Object Palette
- [CHG] Overall speed and usability improvements
- [NEW] Added drag-and-drop support for opening simulations/cases from Windows Explorer

For more details and links to installer, docs and tutorials, go to http://dwsim.inforside.com.br

Thanks,
Daniel