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ENH: new objective functions for adjoint-based optimisation
Added five new objective functions for use in adjoint-based optimisation.
Details of new models
The new objective functions mainly target internal flow optimisation problems. A short description and an indicative example for each of them follows. All figures that follow depict the velocity magnitude.
flowRate
Computes and minimizes/maximizes the volume-flow rate through a given set of patches. An indicative application follows, in which the flow-rate though the upper part of the duct should be maximized (flow from left to right).
Initial geometry (52.8% of the flow-rate goes through the upper part)
Optimised geometry (53.7% of the flow-rate goes through the upper part)
Used to distribute the inlet flow-rate to outlet patches with prescribed target percentages. An indicative application follows, in which the equal distribution of the inlet flow-rate to the two outlets is targeted.
Initial geometry (52.8%/47.2% distribution between the upper/lower outlets)
Computes and minimizes the fluid power dissipation that takes place within given cellZones. If the cellZone covers the entire flow domain, this objective is equivalent to volume flow-rate weighted total pressure losses (i.e. the PtLosses objective function).
The boundaries of the target cellZone are highlighted in black.
Initial geometry
Optimised geometry (Power dissipation reduced by 57% within the cellZone)
