A Custom Vortex component has been added to the Rotating Components Library. The custom vortex is a vortex model commonly used in gas turbine cavity modelling. The tangential velocity is specified to produce a velocity profile between that of a forced vortex and free vortex. The radial velocity profile is specified in the following format Cθ= s⋅rn. A custom vortex is characterised by a swirl constant, s, and a vortex weighing factor, n. The custom vortex model provides a simplified cavity model that allows the user to adjust the swirl constant and vortex weighing factor to match the swirl pressure rise seen in empirical measurements.
The Heat Exchanger components in Flownex® has been updated. These components are now easier to use and a few essential features have been added. The heat exchangers that has been updated is the Shell and Tube Heat Exchanger, Finned Tube Heat Exchanger and the Recuperator, which has been renamed to a Plate Heat Exchanger. The changes make using the heat exchangers for a general application like radiators etc. simpler.
Furthermore, fouling factors and fin efficiencies have been added to the heat exchangers where relevant. These can be used to model degradation over time and changes in the condition of the heat exchangers.
The component uses the NASA CEA program to predict the reaction products at the specified end temperature. This component will then calculate the change in Gibbs free energy and enthalpy during the reaction. As part of this enhancement, a Gibbs free energy result has been added on all flow nodes. The first application of this reactor is to model fuel cells and use Flownex® to optimise the surrounding systems. There are however many other possible applications.
The Flownex® Co-Simulation FMU capability has been enhanced. Flownex® now supports state serialization of the FMU. State serialization is however a slow process and therefore it is not recommended unless it is crucial. There is a new option in the FMU configuration to turn state serialization on and off. The option is false by default. An option has also been added to the FMU configuration to hide Flownex® during FMU execution.
Errors and warnings were displayed in the console version of Flownex®, but were not recorded. The errors and warnings are now recorded to files named FlownexSEConsoleWarnings.txt and FlownexSEConsoleErrors.txt respectively. These files are located inside the project folder.