3 replies to this topic

[DanW]

DWSIM 1.6 Beta is now available for download. Here is the list of changes since build 3399:

- [NEW] Added Spanish GUI translation (many thanks to Abad Lira and Gustavo León)
- [NEW] Added a Multivariate, Constrained Optimization utility
- [NEW] Added a Sensitivity Analysis utility supporting up to 2 independent variables
- [NEW] Added "command-line run mode" (read the documentation for more details)
- [NEW] Added a 'Write to the Flowsheet' capability to the Spreadsheet
- [NEW] New Property Packages: Chao-Seader, Grayson-Streed, Modified UNIFAC (Dortmund) and Peng-Robinson with support for immiscible water and Volume Translation
- [NEW] New Energy Recycle unit operation
- [NEW] Added more units for the most common properties (temperature, pressure, etc.)
- [NEW] Added code to display a message when the flash algorithm converges to the trivial solution
- [CHG] Redesigned UNIFAC group structure to include all available groups
- [CHG] Report can now show all properties from all objects in the flowsheet
- [CHG] Removed single-phase and phase change limitations from the Heat Exchanger
- [CHG] Property Package selection interface now groups packages by type
- [CHG] Changed component selection interface
- [FIX] Fixed bugs and made minor changes to the code/interface

The documentation was updated (only in English from now on...) and I've added more samples to show you some of the new features. More will come later.

Since this is a "beta" release, it continues to count on users in order to find bugs, which I hope aren't that much this time.

As always, any feedback is very appreciated. I hope you like this build, as I put too much effort in order to make it happen this time.

About DWSIM

DWSIM is an Open Source Chemical Process Simulator for Windows, written in VB.NET, with advanced thermodynamic calculations, petroleum characterization and hypothetical components utilities, accessible through a fully-featured graphical user interface.

Links

Website: http://dwsim.inforside.com.br
Project files: http://www.sourcefor.../projects/dwsim
Development Blog: http://dwsim.inforside.com.br/blog

Edited by DanW, 15 November 2009 - 03:35 PM.

[StealthProg]

How do you handle interaction parameters in DWSIM. If you don't have any the predictions are useless, if you do have them, where are they from?

[DanW]

How do you handle interaction parameters in DWSIM. If you don't have any the predictions are useless, if you do have them, where are they from?

DWSIM contains an interaction parameter database which is a subset of ChemSep's own database. These parameters were taken with permission from ChemSep's authors. If the database doesn't contain the IP for your binary, then you can insert your own parameter or estimate it by using one of the estimation methods available.

[DanW]

There is a new DWSIM version available for download, which adds support for pump curves (including system curve generation), new rigorous column specifications and general flowsheet drawing improvements.

Click here or here to download the new build.