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Versioning

The versioning scheme using in this project is based on Semantic Versioning, but adopts a different approach to handling pre-releases and build metadata.

The essence of semantic versioning is a 3-part MAJOR.MINOR.MAINTENANCE numbering scheme, where the project author increments:

  • MAJOR version when they make incompatible API changes,

  • MINOR version when they add functionality in a backwards-compatible manner, and

  • MAINTENANCE version when they make backwards-compatible bug fixes.

History

Version 0.2.1 (04-01-2021)

  • Version 0.2.0 was not running after restructuring of source files. Restored package by adding all submodules correctly in setup.py

Version 0.2.0 (03-01-2021)

New Features

  • Added an "Internals" System. You can now add any instance derived from BaseInternal to the internals list of a unit operation. These internals can represent tubes in a heat exchanger, trays or packing in a column, or special realisations of pumps and compressors.

    Breaking Change: It is not possible to define internals by a string anymore.

U3=pfd.unit(Vessel("Fermenter","Fermenter", position=(200,190), capLength=20, showCapLines=False, size=(80,140),internals=[Stirrer(type=StirrerType.Anchor), Jacket()] ))
  • Changed how vertical/horizontal vessels work: Now every vessel is vertical by default, but can be rotated either with the rotate(angle) method or by passing the angle as parameter into the constructor.
BA11=Vessel("DS10-BA11","Horizontal Vessel", angle=90, position=(560,400), size=(40,100), capLength=20,internals=[CatalystBed()] )
  • Compressor unit operation

Bugfixes

  • Multiple calls to .rotate(angle) do not rotate the ports anymore while keeping the unit itself at the same angle.
  • Rotating a unit now influences the area that is blocked for pathfinding.

Version 0.1.1 (27-12-2020)

  • Alpha version
  • Basic drawing functions implemented
  • svgwrite backend for vector output
  • Limited library of unit operations
    • Mixer / Splitter
    • Heat Exchanger
    • Vessel (vertical/horizontal)
    • Distillation Column (optional reboiler and condenser, some internals)
    • Pump
    • Stream flag / Feed / Product
    • Valve
    • BlackBox Unit Operation (catch all for non-implemented icons)
  • Arbitary Rotation
  • Horizontal Flipping
  • Stream routing via Dykstra algorithm (using the python-pathfinding package )