Straight Pipe $—$ Model for straight pipe geometry

The Straight Pipe component calculates the pressure loss for a straight pipe in either the laminar or turbulent flow regimes. The type of flow depends on the state of the fluid and the parameter settings (for example, roughness).

Connections

 Name Description Modelica ID ${\mathrm{port}}_{A}$ Layout of port where oil flows into an element ($0<{m}_{\mathrm{flow}}$, ${p}_{B}<{p}_{A}$ means $0<\mathrm{Δp}$) port_A ${\mathrm{port}}_{B}$ Hydraulic port where oil leaves the component (${m}_{\mathrm{flow}}<0$, ${p}_{B}<{p}_{A}$ means $0<\mathrm{Δp}$) port_B $\mathrm{oil}$ oil

Parameters

General Parameters

 Name Default Units Description Modelica ID ${\mathrm{ΔT}}_{\mathrm{system}}$ $0$ $K$ Temperature offset from system temperature dT_system use volume A $\mathrm{true}$ If true, a volume is present at port_A useVolumeA use volume B $\mathrm{true}$ If true, a volume is present at port_B useVolumeB ${V}_{A}$ ${10}^{-6}$ ${m}^{3}$ Geometric volume at port A volumeA ${V}_{B}$ ${10}^{-6}$ ${m}^{3}$ Geometric volume at port B volumeB

Hydraulic Resistance Parameters

 Name Default Units Description Modelica ID ${d}_{\mathrm{hyd}}$ $\frac{1}{10}$ $m$ Hydraulic diameter d_hyd $L$ $1$ $m$ Length L roughness [1] Choice of considering surface roughness roughness $K$ $0$ $m$ Roughness (average height of surface asperities) K

[1] $\mathrm{Modelica.Fluid.Dissipation.Utilities.Types.Roughness.Neglected}$