.AixLib.Fluid.FixedResistances

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 AixLib.Fluid.Actuators. For models of flow resistances as part of the building constructions, see AixLib.Airflow.Multizone.

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

Contents

Name	Description
CheckValve	Check valve that avoids flow reversal
GenericPipe	Pipe model that includes several selectable pipe models
HydraulicDiameter	Fixed flow resistance with hydraulic diameter and m_flow as parameter
HydraulicResistance	Simple model for a hydraulic resistance using a pressure loss factor
Junction	Flow splitter with fixed resistance at each port
LosslessPipe	Pipe with no flow friction and no heat transfer
Pipe	Discretized DynamicPipe with heat loss to ambient
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
SimplePipe	Simple pipe model with n discrete elements
Examples	Collection of models that illustrate model use and test models
Validation	Collection of validation models
BaseClasses	Package with base classes for AixLib.Fluid.FixedResistances