modelTwoWayEqualPercentage

Two way valve with equal percentage flow characteristics

Extends from BaseClasses.PartialTwoWayValveKv.

Information

Two way valve with an equal percentage valve opening characteristic.

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

Parameters

TypeNameDefaultDescription
RealR50Rangeability, R=50...100 typically
Realdelta00.01Range of significant deviation from equal percentage law

Revisions

  • 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. See IBPSA.Fluid.Actuators.UsersGuide.
  • February 14, 2012 by Michael Wetter:
    Added filter to approximate the travel time of the actuator.
  • March 25, 2011, by Michael Wetter:
    Added homotopy method.
  • June 5, 2008 by Michael Wetter:
    First implementation.