Name

Default

Units

Description

Modelica ID

$\mathrm{Use} \mathrm{default} \mathrm{medium}$

$\mathrm{true}$

When true the default gas properties defined for Air will be used.

useDefaultMedium

$\mathrm{medium}$

$-$

When Use default medium is false this option gets turned on. The user can specify the name of the Gas model dragged into the canvas.

medium

Name

Default

Units

Description

Modelica ID

$\mathrm{b\_\_lamreg}$

$0.999$

Flow transition constant from turbulent to laminar zone

blamreg

$\mathrm{UseRestrictionArea}$

$\mathrm{false}$

True (checked) means flow restriction area can be given which will be converted to sonic conductance based on Gidlund's approximation

UseRestrictionArea

Name

Default

Units

Description

Modelica ID

$p_{\mathrm{open}}$

$100$

$\mathrm{Pa}$

Pressure at which valve is fully open from A to C (C = Copen)

popen

Exact

$\mathrm{false}$

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

Exact

$\mathrm{t\_\_c}$

$0.1$

$s$

Time constant

tc

$C_{\min }$

$1 \cdot {10}^{-13}$

$\frac{m^3}{s\cdot \mathrm{Pa}}$

Valve Sonic Conductance when closed (leakage)

Cmin

$C_{\max }$

$1.6 \cdot {10}^{-8}$

$\frac{m^3}{s\cdot \mathrm{Pa}}$

Valve Sonic Conductance when fully open

Cmax

$A_{\min }$

$0$

$m^2$

Restriction Area when closed (leakage); used when $\mathrm{Use} \mathrm{Restriction} \mathrm{Area}$ is true

Amin

$\mathrm{Ar\_\_max}$

$0.00001$

$m^2$

Valve restriction area when fully open; used when $\mathrm{Use} \mathrm{Restriction} \mathrm{Area}$ is true

Armax

$b$

$0.54$

Critical pressure ratio

bcr