Version 1.1.0 (2023-10-06)

Version 1.1.0 of the DLR Thermofluid Stream Library. This version requires the Modelica Standard Library 4.0.0.

Improvements in this version:

• Updated graphical layout (both diagram and icon) of connectors Inlet and Outlet to be structured according to the convention of the Modelica Standard Library.
• Updated flow resistance model that now provides a) the ability to choose different shapes for cross sectional area and b) additional pressure loss functions (collected in FlowResistance sub-package).
• Fix bug in cross-flow heat exchanger: solution not converging for increasing number of discretization elements.
  • Scale reference mass-flow for heat transfer coefficient if stream is split into parallel streams.
  • Introduce parameter nCellsParallel for general usage in all discretized heat exchangers.
• Updated discretized and NTU heat exchangers to inherit from common base components.
  • Added summary record to NTU heat exchangers
  • Changed direction of the ThermalConductor in the cross-flow heat exchanger, cross-flow heat exchanger with flow resistance and undirected cross-flow heat exchanger. This causes heat flow from A to B to be positive, similar to the counter-flow heat exchangers.
  • Corrected an error in the undirected counter-flow heat exchanger. Now m_flow_A and m_flow_B corresponds to the flow through channel A and B respectively, instead of the other way around.
• Fix bug in PartialVolumeM and PartialVolumeN: noEvent operator now works on mass flow related if-statements.
• Fix wrong handling of conditional connectors:
  • remove input binding for conditional connectors and
  • enable/disable conditional connectors which depend on setEnthalpy parameter.
  This concerns:
  • Boundaries: CreateState, DynamicPressureInflow, DynamicPressureOutflow, Sink, Source.
  • FlowControl: MCV, PCV.
  • Undirected: BoundaryFore, BoundaryRear, MCV.

Version 1.0.0

• Converted library to MSL 4.0.0
• Synchronized local copy (myMedia) of MSL Media package
• Updated XRG Media package to be compatible
• Minor unit fixes

Version 0.5.0 (Compatible with MSL 3.2.3)

• Added pressure loss function (Haaland)
• Add function to estimate efficiency in discretized heat exchangers
• Fix typos and update documentation
• Last version compatible with MSL 3.2.3, further development on MSL 4

Open Beta 0.4

• add topology with non-physical constraints
• add working bidirectional MCV
• adaptions for OMEdit testing (and removal of some workarounds for OMEdit)
• minor refactors

Open Beta 0.3

• adapted Cases to match convention
• several minor bugfixes
• new models: PCV, MCV, PhaseSeparator2, several discretizedHEX models
• new sensor lowpass initialization
• add fkts isentropicExponent & molarMass to TableBased
• re-done parametrization of nominal-flow-pump
• addition of several advanced options
• reimplementation of discretized HEX
• refactor of volumes

Open Beta 0.2

• Changed Interface: new media path & changed DropOfCommons
• Fixed several bugs
• Improved tool compatibility
• updated Readme

Open Beta 0.1

First Open Beta version of the Library

This version is working well with Dymola 2021, currently limited compatibility with OM.