WOLFRAM SYSTEM MODELER

DisplacementMachine

Model of a pump/motor with volumes

Diagram

Wolfram Language

In[1]:=
SystemModel["Hydraulic.PumpsAndMotors.Internal.DisplacementMachine"]
Out[1]:=

Information

This is a partial model of a pump/motor with volumes.

Limitations

This class is partial, which means that it cannot be instantiated. It is meant to be inherited by other classes. Volumetric efficiency is not included in the models.

Parameters (8)

medium

Value: Oil()

Type: Medium

Description: Medium in the component
D

Value:

Type: Volume (m³)

Description: Displacement per revolution
externalLeakage

Value: 1e-12

Type: PressureDependentLeakage (m³/(s⋅Pa))

Description: Leakage between cylinders
internalLeakage

Value: 1e-12

Type: PressureDependentLeakage (m³/(s⋅Pa))

Description: Leakage between cylinders
frictionD

Value: 1

Type: RotationalDampingConstant (N⋅m⋅s/rad)

Description: Viscous friction
J

Value: 1

Type: MomentOfInertia (kg⋅m²)

Description: Moments of inertia
tankPressure

Value: 100000.0

Type: Pressure (Pa)

Description: Tank pressure
V

Value: 0.0001

Type: Volume (m³)

Description: Volume

Connectors (3)

port_b

Type: Port_b

Description: Port for hydraulic fluid (unfilled icon)
port_a

Type: Port_a

Description: Port for hydraulic fluid (filled icon)
flange

Type: Flange_a

Description: One-dimensional rotational flange of a shaft (filled circle icon)

Components (12)

medium

Type: Medium

Description: Medium in the component
volume_b

Type: Volume

Description: Fixed volume with fluid storage
volume_a

Type: Volume

Description: Fixed volume with fluid storage
inertia

Type: Inertia

Description: 1D-rotational component with inertia
friction

Type: Damper

Description: Linear 1D rotational damper
pumpMotorVariable

Type: BasicDisplacementMachine

Description: Model of a pump/motor with variable displacement and no volumes
externalLeakage_b

Type: RestrictionLaminar

Description: Laminar restriction using conductance
tank_b

Type: Tank

Description: Simple tank with constant pressure
tank_a

Type: Tank

Description: Simple tank with constant pressure
externalLeakage_a

Type: RestrictionLaminar

Description: Laminar restriction using conductance
internalLeakage_ab

Type: RestrictionLaminar

Description: Laminar restriction using conductance
fixed1

Type: Fixed

Description: Flange fixed in housing at a given angle

Extended by (2)

VariableDisplacementMachine

Hydraulic.PumpsAndMotors.Internal

Model of a pump/motor with variable displacement and volumes

FixedDisplacementMachine

Hydraulic.PumpsAndMotors.Internal

Model of a pump/motor with fixed displacement and volumes