This package contains component models for fixed flow resistances. By fixed flow resistance, we mean resistances that do not change the flow coefficient

k = m ⁄ √ΔP.

For models of valves and air dampers, see Buildings.Fluid.Actuators. For models of flow resistances as part of the building constructions, see Buildings.Airflow.Multizone.

The model Buildings.Fluid.FixedResistances.PressureDrop is a fixed flow resistance that takes as parameter a nominal flow rate and a nominal pressure drop. The actual resistance is scaled using the above equation.

The model Buildings.Fluid.FixedResistances.HydraulicDiameter is a fixed flow resistance that takes as parameter a nominal flow rate and a hydraulic diameter. The actual resistance is scaled using the above equation.

The model Buildings.Fluid.FixedResistances.LosslessPipe is an ideal pipe segment with no pressure drop. It is primarily used in models in which the above pressure drop model need to be replaced by a model with no pressure drop.

The model Buildings.Fluid.FixedResistances.Junction can be used to model flow splitters or flow merges.

Name | Description |
---|---|

CheckValve | Check valve that avoids flow reversal |

HydraulicDiameter | Fixed flow resistance with hydraulic diameter and m_flow as parameter |

Junction | Flow splitter with fixed resistance at each port |

LosslessPipe | Pipe with no flow friction and no heat transfer |

Pipe | Pipe with finite volume discretization along flow path |

PlugFlowPipe | Pipe model using spatialDistribution for temperature delay |

PressureDrop | Fixed flow resistance with dp and m_flow as parameter |

Examples | Collection of models that illustrate model use and test models |

Validation | Collection of validation models |

BaseClasses | Package with base classes for Buildings.Fluid.FixedResistances |

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