functionlaminarTurbulentPressureLossHaaland
Pressure loss function (Haaland 1983) for laminar, transient and turbulent flow regimes
Extends from Internal.FlowResistance.partialPressureLoss.
Information
Pressure loss after Darcy–Weisbach, for laminar, (transient?) and turbulent flow.
The friction factor is based on Haaland 1983.
Haaland, S. E. Simple and Explicit Formulas for the Friction Factor in Turbulent Pipe Flow. Journal of Fluids Engineering 105, 89-90; 10.1115/1.3240948 (1983).
Inputs
| Type | Name | Default | Description |
|---|---|---|---|
| SI.ReynoldsNumber | Re_laminar | 2000 | Upper limit for laminar flow (Reynolds number) |
| SI.ReynoldsNumber | Re_turbulent | 4000 | Lower limit for turbulent flow (Reynolds number) |
| Real | shape_factor | 64 | Laminar pressure loss factor (Hagen-Poiseuille) |
| Real | n | 1 | Transition coefficient (see documentation) |
| SI.Length | ks_input | 1e-7 | Surface roughness |
| ThermofluidStream.Processes.Internal.Material | material | ThermofluidStream.Processes.Internal.Material.other | Material of pipe |