.BuildingSystems.Airflow.Multizone.BaseClasses.windPressureProfile

Information

This function computes the wind pressure coefficients C_p from a user-defined table data. The same functionality is also implemented in CONTAM.

This function is used in BuildingSystems.Fluid.Sources.Outside_CpData.

References

• W. S. Dols and B. J. Polidoro,2015. CONTAM User Guide and Program Documentation Version 3.2, National Institute of Standards and Technology, NIST TN 1887, Sep. 2015. doi: 10.6028/NIST.TN.1887.
• Andrew K. Persily and Elizabeth M. Ivy. Input Data for Multizone Airflow and IAQ Analysis. NIST, NISTIR 6585. January, 2001. Gaithersburg, MD.
• M. W. Liddament, 1996, A guide to energy efficient ventilation. AIVC Annex V.

Interface

function windPressureProfile
  extends Modelica.Icons.Function;
  input Modelica.Units.SI.Angle alpha "Wind incidence angle";
  input Real incAngTab[:] "Tabulated points for angle";
  input Real CpTab[size(incAngTab, 1)] "Tabulated points for Cp";
  input Real[size(incAngTab, 1)] d "Derivative values at tabulated points";
  output Real CpAct "Actual Cp value for given incidence angle alpha";
end windPressureProfile;

Revisions

• February 16, 2022, by Michael Wetter:
  Changed argment name to alpha for consistency with figure in BuildingSystems.Airflow.Multizone.BaseClasses.windPressureLowRise.
• February 2, 2022, by Michael Wetter:
  Revised implementation.
  This is for IBPSA, #1436.
• April 6, 2021, by Klaas De Jonge:
  First implementation