.BuildSysPro.IBPSA.Fluid.Examples.Performance.Example4

Information

This example generates a non-linear algebraic loop that consists of 12 equations before manipulation. This loop can be decoupled and removed by changing the equation

port_a.m_flow + port_b.m_flow = -mWat_flow;

in IBPSA.Fluid.Interfaces.StaticTwoPortConservationEquation to

port_a.m_flow + port_b.m_flow = 0;

See Jorissen et al. (2015) for a discussion.

References

• Filip Jorissen, Michael Wetter and Lieve Helsen.
  Simulation speed analysis and improvements of Modelica models for building energy simulation.
  Submitted: 11th Modelica Conference. Paris, France. Sep. 2015.

Contents

Name	Description
Medium

Revisions

• April 12, 2017, by Michael Wetter:
  Removed connection that is no longer needed.
  This is for issue Buildings #704.
• July 28, 2015, by Michael Wetter:
  Moved assignment of m_condens from equation section to declaration to avoid graphical and textual equations.
• July 14, 2015, by Michael Wetter:
  Revised documentation.
• April 17, 2015, by Filip Jorissen:
  First implementation.