Package Modelica.Fluid.Pipes.BaseClasses.WallFrictionDifferent variants for pressure drops due to pipe wall friction
Package Modelica.Fluid.Pipes.BaseClasses.WallFriction
This package provides functions to compute pressure losses due to wall friction in a pipe. Every correlation is defined by a package that is derived by inheritance from the package WallFriction.PartialWallFriction. The details of the underlying pipe wall friction model are described in the UsersGuide. Basically, different variants of the equation
dp = λ(Re,Δ)*(L/D)*ρ*v*|v|/2
are used, where the friction loss factor λ is shown in the next figure:
Extends from Modelica.Icons.Package (Icon for standard packages).
| Name | Description |
|---|---|
Detailed … | Pipe wall friction for laminar and turbulent flow (detailed characteristic) |
Laminar … | Pipe wall friction for laminar flow in circular tubes (linear correlation) |
LaminarAndQuadraticTurbulent … | Pipe wall friction for laminar and turbulent flow in circular tubes (simple characteristic) |
NoFriction … | No pipe wall friction, no static head |
PartialWallFriction … | Partial wall friction characteristic (base package of all wall friction characteristics) |
QuadraticTurbulent … | Pipe wall friction for turbulent flow in circular tubes (simple characteristic, mu not used) |