AixLib.Fluid.Actuators.Valves.TwoWayQuickOpening

# .AixLib.Fluid.Actuators.Valves.TwoWayQuickOpening

Two way valve with quick opening flow characteristics

## Information

Two way valve with a power function for the valve opening characteristic. Valves that need to open quickly typically have such a valve characteristics.

This model is based on the partial valve model AixLib.Fluid.Actuators.BaseClasses.PartialTwoWayValve. Check this model for more information, such as the regularization near the origin.

## Revisions

- June 10, 2021, by Michael Wetter:
  Changed implementation of the filter and changed the parameter `order` to a constant as most users need not change this value.
  This is for #1498.
- August 7, 2020, by Ettore Zanetti:
  changed the computation of `phi` using `max(0.1*l, . )` to avoid phi=0. See issue 1376.
- November 9, 2019, by Filip Jorissen:
  Guarded the computation of `phi` using `max(0, . )` to avoid negative phi. See issue 1223.
- April 4, 2014, by Michael Wetter:
  Moved the assignment of the flow function `phi` to the model instantiation because in its base class, the keyword `input` has been added to the variable `phi`.
- March 27, 2014 by Michael Wetter:
  Revised model for implementation of new valve model that computes the flow function based on a table.
- February 20, 2012 by Michael Wetter:
  Renamed parameter `dp_nominal` to `dpValve_nominal`, and added new parameter `dpFixed_nominal=0`. See AixLib.Fluid.Actuators.UsersGuide.
- March 25, 2011, by Michael Wetter:
  Added homotopy method.
- June 3, 2008 by Michael Wetter:
  First implementation.

Generated at 2026-05-09T18:18:56Z by OpenModelicaOpenModelica 1.26.7 using GenerateDoc.mos