modelCylinderCushion
Extends from OpenHydraulics.Interfaces.PartialFluidComponent (Base model for any component involving fluid).
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Sizing › Cushion Table | |||
| Real[:,:] | cushionTable | [0, 0.001; 0.029, 0.01; 0.03, 1] | Cushion flow rate (1st col = s_rel; 2nd col = fraction of q_nom) |
| Modelica.Blocks.Types.Smoothness | smoothness | Modelica.Blocks.Types.Smoothness.LinearSegments | smoothness of table interpolation |
| Sizing › Nominal Values | |||
| SI.VolumeFlowRate | q_nom | 0.01 | Nominal flow rate at dp_nom |
| SI.AbsolutePressure | dp_nom | 1e4 | Nominal pressure drop at q_nom |
| SI.Diameter | D_nom | 0.05 | Nominal diameter when fully open |
| SI.Density | d_nom | 850 | Nominal fluid density for metering curve |
| Real | zeta_nom | 2 | Loss factor when fully open |
| Advanced | |||
| SI.Pressure | dp_relief | 1e20 | Relief pressure |
| Initialization › Fluid | |||
| SI.AbsolutePressure | p_init (from PartialFluidComponent) | environment.p_ambient | Initial temperature of the component |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| OpenHydraulics.Interfaces.FluidPort | port_a | ||
| OpenHydraulics.Interfaces.FluidPort | port_b | ||
| Modelica.Mechanics.Translational.Interfaces.Flange_b | flange_b | (right) driven flange (flange axis directed OUT OF cut plane) | |
| Modelica.Mechanics.Translational.Interfaces.Flange_a | flange_a | (left) driving flange (flange axis directed INTO cut plane, e. g. from left to right) |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| SI.Distance | s_rel | flange_b.s - flange_a.s | distance until end-of-travel |
| SI.Velocity | v_rel | der(s_rel) | relative velocity |
| SI.Pressure | dp | port_a.p - port_b.p | Pressure drop from port_a to port_b |
| OpenHydraulics.Basic.VariableRestriction | cushionRestriction | ||
| Valves.ReliefValve | reliefValve | ||
| Modelica.Blocks.Tables.CombiTable1Dv | cushionTableBlock | ||
| OpenHydraulics.Fluids.BaseClasses.PartialFluid | oil (from PartialFluidComponent) | This model must be defined in each circuit; the type must be a subtype of PartialFluid |