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Shuttle Valve

Shuttle valve with pressure bias

 

Description

Connections

Parameters

Description

The Shuttle Valve component allows flow out of port C from the either port A or port B, depending which has the higher pressure.

Based on the orifice area, the pressure vs. flow rate relationship is calculated by the formulation used in the Orifice component.

The boolean parameters Use volume A, Use volume B, and Use volume C, when true, add optional volumes VA, VB, and VC to ports A, B, and C, respectively.

Connections

Name

Description

Modelica ID

portA

Hydraulic port of left inlet

portA

portB

Hydraulic port of right inlet

portB

portC

Hydraulic port of bottom outlet

portC

Parameters

General Parameters

Name

Default

Units

Description

Modelica ID

popen

1·104

Pa

Pressure difference to make one side fully open

popen

Aclose

1·10−12

m2

Orifice area when closed (leakage)

Aclose

Aopen

1·10−5

m2

Orifice area when fully open

Aopen

Exact

false

 

When true (checked) a first-order dynamics is used for the valve areas

Exact

tc

110

s

Time constant

tc

Cd

710

 

Flow-discharge coefficient

Cd

Cr

12

 

Reynolds number at critical flow

ReCr

Volumes Parameters

Name

Default

Units

Description

Modelica ID

Use volume A

false

 

When true a hydraulic volume chamber is added to portA

useVolumeA

Va

1·10−6

m3

Volume of chamber A

Va

Use volume B

false

 

When true a hydraulic volume chamber is added to portB

useVolumeB

Vb

1·10−6

m3

Volume of chamber B

Vb

Use volume C

false

 

When true a hydraulic volume chamber is added to portC

useVolumeC

Vc

1·10−6

m3

Volume of chamber C

Vc

See Also

Hydraulics Library

Valves