This model describes the bi-directional air flow through an open door.
To compute the bi-directional flow,
the door is discretize along the height coordinate, and uses
an orifice equation to compute the flow for each compartment.
The door can be either open or closed, depending on the input signal
Set y=0 if the door is closed, and y=1
if the door is open.
Use the model
for a door that is always closed.
June 27, 2018, by Michael Wetter:
Corrected old parameter annotation.
April 11, 2016 by Michael Wetter:
Corrected wrong hyperlink in documentation for
January 22, 2016, by Michael Wetter:
Corrected type declaration of pressure difference.
December 14, 2012 by Michael Wetter:
Renamed protected parameters for consistency with the naming conventions.
December 6, 2011 by Michael Wetter:
Changed the computation of the discharge coefficient to use the
nominal density instead of the actual density.
sqrt(2/rho) sometimes causes warnings from the solver,
as it seems to try negative values for the density during iterative solutions.
August 12, 2011 by Michael Wetter:
Changed model to use the new function
July 20, 2010 by Michael Wetter:
Migrated model to Modelica 3.1 and integrated it into the Buildings library.
February 10, 2005 by Michael Wetter:
Released first version.
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