PartialStraightPipe

Base class for straight pipe models

Information

This information is part of the Modelica Standard Library maintained by the Modelica Association.

Base class for one dimensional flow models. It specializes a PartialTwoPort with a parameter interface and icon graphics.

Parameters (10)

allowFlowReversal

Value: system.allowFlowReversal

Type: Boolean

Description: = true to allow flow reversal, false restricts to design direction (port_a -> port_b)

nParallel

Value: 1

Type: Real

Description: Number of identical parallel pipes

length

Value:

Type: Length (m)

Description: Length

isCircular

Value: true

Type: Boolean

Description: = true, if cross sectional area is circular

diameter

Value:

Type: Diameter (m)

Description: Diameter of circular pipe

crossArea

Value: Modelica.Constants.pi * diameter * diameter / 4

Type: Area (m²)

Description: Inner cross section area

perimeter

Value: Modelica.Constants.pi * diameter

Type: Length (m)

Description: Inner perimeter

roughness

Value: 2.5e-5

Type: Roughness (m)

Description: Average height of surface asperities (default: smooth steel pipe)

V

Value: crossArea * length * nParallel

Type: Volume (m³)

Description: Volume size

height_ab

Value: 0

Type: Length (m)

Description: Height(port_b) - Height(port_a)

Connectors (2)

port_a

Type: FluidPort_a

Description: Fluid connector a (positive design flow direction is from port_a to port_b)

port_b

Type: FluidPort_b

Description: Fluid connector b (positive design flow direction is from port_a to port_b)

Components (1)

system

Type: System

Description: System wide properties

Extended by (2)

DynamicPipe

Modelica.Fluid.Pipes

Dynamic pipe model with storage of mass and energy

StaticPipe

Modelica.Fluid.Pipes

Basic pipe flow model without storage of mass or energy