modelOutside_CpData_Angles
Test model for source and sink with outside weather data and wind pressure using user-defined Cp values
Extends from Modelica.Icons.Example (Icon for runnable examples).
Information
This model demonstrates the use of a source for ambient conditions that computes the wind pressure on a facade of a building using a user-defined wind pressure profile.
The model showcases the possibility to use asymmetrical wind pressure profiles. It also shows how Cp,act shifts with regards to the wind direction and azimuth based on the Cp values which are defined relative to the surface normal.
The plot shows Cp,act of each boundary for each wind direction. Notice how the profile is shifted based on the surface azimuth.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Units.SI.Angle[:] | incAngSurNor | {0, 45, 90, 135, 180, 225, 270, 315}*2*Modelica.Constants.pi/360 | Wind incidence angles |
| Real[:] | CpSym | {0.4, 0.1, -0.3, -0.35, -0.2, -0.35, -0.3, 0.1} | Cp values that are symmetric |
| Real[:] | CpAsy | {0.4, 0.1, -0.3, -0.35, -0.2, -0.6, -0.9, -0.1} | Cp values that are asymmetric |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Buildings.Fluid.Sources.Outside_CpData | symNor | Model to compute wind pressure on North-facing surface | |
| Buildings.Fluid.Sources.Outside_CpData | asyNor | Model to compute wind pressure on North-facing surface | |
| Buildings.Fluid.Sources.Outside_CpData | asyWes | Model to compute wind pressure on West-facing surface | |
| Buildings.Fluid.Sources.Outside_CpData | symWes | Model to compute wind pressure on West-facing surface | |
| Modelica.Blocks.Sources.Ramp | winDir | Wind direction | |
| Buildings.BoundaryConditions.WeatherData.ReaderTMY3 | weaDat |
Contents
| Name | Description |
|---|---|
 Medium | Medium model for air |
Revisions
-
February 2, 2022, by Michael Wetter:
Revised implementation.
This is for IBPSA, #1436. -
Jun 28, 2021 by Klaas De Jonge:
First implementation.