.BuildSysPro.IBPSA.Media.Air.dynamicViscosity

Information

This function returns the dynamic viscosity.

Implementation

The function is based on the 5th order polynomial of Modelica.Media.Air.MoistAir.dynamicViscosity. However, for the typical range of temperatures encountered in building applications, a linear function sufficies. This implementation is therefore the above 5th order polynomial, linearized around 20°C. The relative error of this linearization is 0.4% at -20°C, and less then 0.2% between -5°C and +50°C.

Revisions

• December 19, 2013, by Michael Wetter:
  First implementation.