Discretized Pipe
Lossy model of a discretized pipe
Description
Connections
Parameters
The Discretized Pipe component models a pipe with wall friction losses. The pressure drop is computed with the Darcy equation, with the friction factor determined using the Haaland approximation for turbulent flow. The compressibility effect with compliant walls and the effect of fluid inertia is embedded in the component. Refer to the Circular Pipe for the detailed model, Fluid Inertia for the effect of inertial properties, and Compliant Cylinder for the dynamic compressibility effect.
Name
Modelica ID
Hydraulic port on left side
portA
Hydraulic port on right side
portB
Basic
Default
Units
Number of segments
Numseg
Pipe length
L
Pipe roughness
epsilon
Young's modulus
Em
Pipe diameter
Diameter
Pipe wall thickness
thickness
Advanced Cylinder
Relative gas content = Vg/V
alpha
Heat ratio of gas (Cp/Cv)
k
Expansion time constant
tau
Advanced Pipe
Reynolds number at transition to laminar flow
ReL
Reynolds number at transition to turbulent flow
ReT
See Also
Hydraulics Library
Restrictions
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