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MapleSim Hydraulics Library from Modelon

Ind Hole  Inductance of a small hole

The IndHole component describes the inductance of an oil column in a small, sharp-edged hole and includes the observed increase compared with the theoretical value. The model is valid for sharp-edged holes with:

0.5mm < d < 1.0mm

and

1<d < 20

There is a check to determine whether the following condition is met:

d<

The geometric volume of the lumped volume at each port is computed from the parameters length and area. Use the modifier(s)

VolumeA(port_A(p(start=1e5,fixed=true)))

and/or

VolumeB(port_A(p(start=1e5,fixed=true)))

to set the initial condition(s) for the pressure of the lumped volume(s) Pa.

Use the modifier

IndHolnV(q(start=1e-6,fixed=true))

to set the initial condition for the flow rate of the inductance [m3 / s].

Connections

Name

Description

Modelica ID

portA

Layout of port where oil flows into an element (0<mflow, pB<pA means 0<&Delta;p)

port_A

portB

Hydraulic port where oil leaves the component (mflow<0, pB<pA means 0<&Delta;p)

port_B

oil

 

oil

Parameters

Name

Default

Units

Description

Modelica ID

&Delta;Tsystem

0

K

Temperature offset from system temperature

dT_system

use volume A

true

 

If true, a volume is present at port_A

useVolumeA

use volume B

true

 

If true, a volume is present at port_B

useVolumeB

VA

10-6

m3

Geometric volume at port A

volumeA

VB

10-6

m3

Geometric volume at port B

volumeB

0.015

m

Hole length

length

d

8.5·10-4

m

Hole diameter

diameter

See Also

Lines, MapleSim Hydraulics Library from Modelon Overview


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