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Start values for DynamicPressureInlet/Outlet/Nozzle - #211

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Start values for DynamicPressureInlet/Outlet/Nozzle#211
RaphaelGebhart wants to merge 1 commit into
DLR-SR:mainfrom
RaphaelGebhart:DynamicComponentsAddStartValue

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@RaphaelGebhart

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assumeConstantDensity=false causes a nonlinear equation system for ThermofluidStream.Boundaries.DynamicPressureInflow
ThermofluidStream.Boundaries.DynamicPressureOutflow and
ThermofluidStream.Processes.Nozzle.

I added the parameters dp_start, p_start, T_start to provide start values for this NLE. One could add the start values individualy on text layer, but i think thats rather inconvenient.

….p_out since they mainly occur for assumeConstantDensity=false. saves work
@RaphaelGebhart

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Converted to draft, as I need to review this PR again before proceeding.

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