modelLumpedStraightPipe
Lumped straight pipe (circular duct)
Extends from ThermoSysPro.Fluid.Interfaces.IconColors (Colors of the static, singular and dynamic model icons).
Information
## Copyright © EDF 2002 - 2026
## ThermoSysPro Version 4.2
This component model is documented in Sect. 13.5 of the ThermoSysPro book.
Parameters
| Type | Name | Default | Description |
|---|
| Units.SI.Length | L | 10. | Pipe length |
| Units.SI.Diameter | D | 0.2 | Pipe internal hydraulic diameter |
| Real | ntubes | 1 | Number of pipes in parallel |
| Real | lambda | 0.03 | Friction pressure loss coefficient (active if lambda_fixed=true) |
| Real | rugosrel | 0.0001 | Pipe roughness (active if lambda_fixed=false) |
| Units.SI.Position | z1 | 0 | Inlet altitude |
| Units.SI.Position | z2 | 0 | Outlet altitude |
| Boolean | lambda_fixed | true | true: lambda given by parameter - false: lambde computed using Idel'Cik correlation |
| Boolean | inertia | false | true: momentum balance equation with inertia - false: without inertia |
| Fluid › Fluid properties |
| Units.SI.Density | p_rho | 0 | If > 0, fixed fluid density |
| IF97Region | region | IF97Region.All_regions | IF97 region (active for IF97 water/steam only) |
Revisions
Authors
Daniel Bouskela
Baligh El Hefni
