Package HydraulicsByFluidon.​Components.​Lines.​Base
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Information

Standard package icon.

Extends from Modelica.​Icons.​Package (Icon for standard packages).

Package Contents

NameDescription
SimpleBendBend
SimpleElbowElbow
SimpleExpansionContractionSudden Expansion / Contraction

Model HydraulicsByFluidon.​Components.​Lines.​Base.​SimpleBend
Bend

Information

The component Bend is a valid model for Bend angle between 15° and 180°.

Please consider: The component was modeled in order to consider the pressure losses of well rounded bends. However, the use of the component can lead to extremely long simulation times, since a small stepsize must be selected due to the low resistance of an elbow.

Formulas are taken from W. Wagner, Strömung und Druckverlust, 7. Auflage 2012.

Parameters

TypeNameDefaultDescription
LengthDiameter0.032Diameter
AngleBendAngle0.5 * Modelica.Constants.piBend angle
LengthBendRadius0.1Bend radius
DimensionlessRatiorelRoughness1e-6Relative roughness
BooleanforwardFluidPropertiestrueForward fluid properties between ports

Connectors

TypeNameDescription
FluidPortfluidPortAHydraulic port A
FluidPortfluidPortBHydraulic port B

Model HydraulicsByFluidon.​Components.​Lines.​Base.​SimpleElbow
Elbow

Information

The component Elbow is a valid model for Elbow angle between 30° and 120°.

Please consider: The component was modeled in order to consider the pressure losses of sharp edged elbows. However, the use of the component can lead to extremely long simulation times, since a small stepsize must be selected due to the low resistance of an elbow.

Formulas are taken from W. Wagner, Strömung und Druckverlust, 7. Auflage 2012, and Will, D., Hydraulik, Grundlagen, Komponenten, Schaltungen, 5. Auflage 2011.

Parameters

TypeNameDefaultDescription
LengthDiameter0.032Diameter
AngleAngle0.5 * Modelica.Constants.piElbow angle
BooleanforwardFluidPropertiestrueForward fluid properties between ports

Connectors

TypeNameDescription
FluidPortfluidPortAHydraulic port A
FluidPortfluidPortBHydraulic port B

Model HydraulicsByFluidon.​Components.​Lines.​Base.​SimpleExpansionContraction
Sudden Expansion / Contraction

Information

The component ExpansionContraction is a model of a cross section enlargement (diffusor) or a cross section reduction (nozzle). It depends on the flow direction.

The component computes the loss number zeta

according to the following equations:

Borda-Carnot Equation

Formulas are taken from E. Truckenbrodt, Fluidmechanik, Band 1: Grundlagen und elementare Strömungsvorgänge dichtebeständiger Fluide, 4. Auflage, 2008.

Extends from HydraulicsByFluidon.​Components.​Base.​HydTwoPortVertical.

Parameters

TypeNameDefaultDescription
LengthD10.016Diameter 1
LengthD20.05Diameter 2
BooleanforwardFluidPropertiestrueForward fluid properties between ports

Connectors

TypeNameDescription
FluidPortfluidPortAHydraulic port A
FluidPortfluidPortBHydraulic port B