Ind Hole No Volumes $—$ Inductance of a small hole

The IndHoleNoVolume 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:

0.5 mm < d < 1

and

1 < d / &ell; < 2

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

&ell; > d

Use the modifier

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

to set the initial condition for the flow rate of the inductance [${m}^{3}$/$s$].

Connections

 Name Description Modelica ID ${\mathrm{port}}_{A}$ Layout of port where oil flows into an element ($0<{m}_{\mathrm{flow}}$, ${p}_{B}<{p}_{A}$ means $0<\mathrm{Δp}$) port_A ${\mathrm{port}}_{B}$ Hydraulic port where oil leaves the component (${m}_{\mathrm{flow}}<0$, ${p}_{B}<{p}_{A}$ means $0<\mathrm{Δp}$) port_B $\mathrm{oil}$ oil

Parameters

 Name Default Units Description Modelica ID ${\mathrm{ΔT}}_{\mathrm{system}}$ $0$ $K$ Temperature offset from system temperature dT_system $\ell$ $0.015$ $m$ Hole length length $d$ $8.5·{10}^{-4}$ $m$ Hole diameter diameter