Name

Default

Units

Description

Modelica ID

$p_{\mathrm{open}}$

$1·{10}^4$

$\mathrm{Pa}$

Pressure difference to make one side fully open

popen

$A_{\mathrm{close}}$

$1·{10}^{\mathrm{-12}}$

$m^2$

Orifice area when closed (leakage)

Aclose

$A_{\mathrm{open}}$

$1·{10}^{\mathrm{-5}}$

$m^2$

Orifice area when fully open

Aopen

$\mathrm{Exact}$

$\mathrm{false}$

True (checked) means a first-order dynamics is used for the valve areas

Exact

$t_c$

$0.1$

$s$

Time constant

tc

$\mathrm{Use\; constant\; Cd}$

$\mathrm{true}$

True (checked) means a constant coefficient of discharge is implemented, otherwise a variable $C_d$ is used in flow calculation

UseConstantCd

$C_d$

$0.7$

Flow-discharge coefficient; used when $\mathrm{Use\; constant\; Cd}$ is true

Cd

${\mathrm{\Re }}_{\mathrm{Cr}}$

$12$

Reynolds number at critical flow; used when $\mathrm{Use\; constant\; Cd}$ is true

ReCr

$C_{d\left(\max \right)}$

$0.7$

Maximum flow-discharge coefficient; used when $\mathrm{Use\; constant\; Cd}$ is false

Cd_max

${\mathrm{Crit}}_{\mathrm{no}}$

$1000$

Critical flow number; used when $\mathrm{Use\; constant\; Cd}$ is false

Crit_no

Name

Default

Units

Description

Modelica ID

Use volume A

$\mathrm{false}$

True (checked) means a hydraulic volume chamber is added to portA

useVolumeA

$V_A$

$1·{10}^{\mathrm{-6}}$

$m^3$

Volume of chamber A

Va

Use volume B

$\mathrm{false}$

True (checked) means a hydraulic volume chamber is added to portB

useVolumeB

$V_B$

$1·{10}^{\mathrm{-6}}$

$m^3$

Volume of chamber B

Vb

Use volume C

$\mathrm{false}$

True (checked) means a hydraulic volume chamber is added to portC

useVolumeC

$V_C$

$1·{10}^{\mathrm{-6}}$

$m^3$

Volume of chamber C

Vc