This is a partial model of an accumulator. When the hydraulic pressure is higher than the preload pressure, the fluid starts to enter the accumulator:



where

		:	Volume change
		:	Mass flow rate
		:	Fluid density

Implementation

A laminar restriction models the accumulator opening. The conductance of the restriction is put to zero when system pressure is lower than the preload pressure.

Limitations

This class is partial, which means that it cannot be instantiated. It is meant to be inherited by other classes.

Zero crossing scaling (advanced)

Events are triggered when the pressure difference pDiff changes sign. When this variable has no nominal-attribute, the zero crossing function is scaled dynamically based on observed values. If the automatic scaling results in too little or too much event hysteresis, the nominal-attribute may be set in order to obtain a fixed scaling. Note that setting nominal to 1.0 does not correspond to dynamic scaling; only absence of nominal does.

medium	Value: Oil() Type: Medium Description: Medium in the component
V0	Value: 0.001 Type: Volume (m³) Description: Maximum fluid volume
p0	Value: 10000000.0 Type: Pressure (Pa) Description: Preload pressure
G	Value: 1e-08 Type: ConductanceOfLaminarResistance (m³/(s⋅Pa)) Description: Conductance of laminar resistance