WOLFRAM

WOLFRAM SYSTEM MODELER

RestrictionLaminar

Laminar restriction using conductance

Wolfram Language

In[1]:=
SystemModel["Hydraulic.Restrictions.RestrictionLaminar"]
Out[1]:=

Information

This model describes laminar flow. The flow is given by the equation:



where
:Mass flow rate
:Fluid density
G:Conductance of the restriction
:Pressure difference between ports a and b

Limitations

This model is only valid for laminar flow. No checks are made if it is physically possible that the flow through the component actually is laminar.

Reference

F. Young, R. Munson, H. Okiishi, and W. Huebsch, A Brief Introduction to Fluid Mechanics, 4th ed., Hoboken, NJ: Wiley, 2007 p. 291.

Parameters (2)

medium

Value: Oil()

Type: Medium

Description: Medium in the component
G

Value: 1e-010

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

Description: Conductance of laminar resistance

Connectors (2)

port_a

Type: Port_a

Description: Port for hydraulic fluid (filled icon)
port_b

Type: Port_b

Description: Port for hydraulic fluid (unfilled icon)

Components (1)

medium

Type: Medium

Description: Medium in the component

Used in Components (5)

FixedLaminarThrottle

Hydraulic.Valves.FlowControl

Laminar restriction using conductance

PressureReducingValve

Hydraulic.Valves.PressureControl.Internal

Static pressure reducing valve

CylinderDouble

Hydraulic.Cylinders

Double cylinder model

CylinderDoubleFriction

Hydraulic.Cylinders

Same as CylinderDouble but with more friction types added, like Stribeck friction. This model also has external leakage.

DisplacementMachine

Hydraulic.PumpsAndMotors.Internal

Model of a pump/motor with volumes