modelBendPipe
Bend in pipes
Extends from OpenHPL.Icons.BendPipe (Bend pipes icon.), OpenHPL.Interfaces.TwoContacts (Model of two connectors).
Information
Usually minor head losses in pipes are considered to be due to fittings, diffusers, nozzles, bend in pipes, etc. We are more interested in head loss due to bend pipes for this model.
A typical loss coefficient value for flanged and threaded elbows, tees, gates, valves, etc., can be taken as,
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Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Manufacturer's design | |||
| Real | K_L | 0.5 | Loss coefficient for pipe bends (Guess or from manufacturer's design) |
| Geometry | |||
| SI.Diameter | D_i | 3 | Pipe diameter of the inlet (LHS) |
| SI.Diameter | D_o | D_i | Pipe diameter of the outlet (RHS) |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Contact_i | i (from TwoContacts) | Inlet contact (positive design flow direction is from i to o) | |
| Contact_o | o (from TwoContacts) | Outlet contact (positive design flow direction is from i to o) |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Data | data | Using standard class with constants | |
| SI.Velocity | v | Water velocity | |
| SI.Area | A | pi*D_i^2/4 | Cross section area |
| SI.Pressure | dp | Pressure drop of fitting | |
| SI.MassFlowRate | mdot | Mass flow rate |