WOLFRAM SYSTEM MODELER
VariableLaminarThrottleLaminar restriction using conductance |
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Diagram
Wolfram Language
In[1]:=
SystemModel["Hydraulic.Valves.FlowControl.VariableLaminarThrottle"]
Out[1]:=
Information
This model with lumped volumes describes laminar flow. The conductance is controlled by the normalized signal sNorm, which varies between 0 and 1. The flow is given by the equation:
where
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 (4)
| medium |
Value: Oil() Type: Medium Description: Medium in the component |
|---|---|
| GMin |
Value: 1e-020 Type: ConductanceOfLaminarResistance (m³/(s⋅Pa)) Description: Minimum conductance of laminar resistance |
| GMax |
Value: 1e-010 Type: ConductanceOfLaminarResistance (m³/(s⋅Pa)) Description: Maximum conductance of laminar resistance |
| V |
Value: 0.0001 Type: Volume (m³) Description: Volume of component |
Connectors (3)
Components (4)
 |
medium |
Type: Medium Description: Medium in the component |
|---|---|---|
 |
volume_a |
Type: Volume Description: Fixed volume with fluid storage |
|
volume_b |
Type: Volume Description: Fixed volume with fluid storage |
 |
controlledLaminarRestriction |
Type: ControlledLaminarRestriction Description: Laminar restriction using conductance |