modelOutside_Cp
Boundary that takes weather data, and optionally the wind pressure coefficient and trace substances, as an input
Extends from Buildings.Fluid.Sources.BaseClasses.Outside.
Information
This model describes boundary conditions for
pressure, enthalpy, and species concentration that can be obtained
from weather data. The model is identical to
Buildings.Fluid.Sources.Outside,
except that it allows adding the wind pressure to the
pressure at the fluid port ports.
The pressure p at the port ports is computed as
p = pw + Cp 1 ⁄ 2 v2 ρ
where
pw is the atmospheric pressure from the weather bus,
Cp is the wind pressure coefficient,
v is the wind speed from the weather bus, and
ρ is the fluid density.
If use_Cp_in=true, then the
wind pressure coefficient is obtained from the input connector
Cp_in. Otherwise, it is set to the parameter
Cp.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Boolean | use_Cp_in | false | Get the wind pressure coefficient from the input connector |
| Real | Cp | 0.6 | Fixed value of wind pressure coefficient |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Blocks.Interfaces.RealInput | Cp_in | Prescribed wind pressure coefficient | |
| Modelica.Units.SI.Pressure | pWin | Change in pressure due to wind force |
Revisions
-
January 24, 2019, by Michael Wetter:
Changed model to use new base class. -
May 30, 2014, by Michael Wetter:
Removed undesirable annotationEvaluate=true. -
October 26, 2011 by Michael Wetter:
First implementation.