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 BuildingSystems.Fluid.Actuators. For models of flow resistances as part of the building constructions, see BuildingSystems.Airflow.Multizone.
The model BuildingSystems.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 BuildingSystems.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 BuildingSystems.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 BuildingSystems.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 1D discretisation along flow direction |
| PlugFlowPipe | Pipe model using spatialDistribution for temperature delay |
| PlugFlowPipeDiscretized | Discretized 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 BuildingSystems.Fluid.FixedResistances |