BuildingSystems.Fluid.FixedResistances

# .BuildingSystems.Fluid.FixedResistances

Package with models for fixed flow resistances

## Information

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.

## Contents

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

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