dynamic viscosity eta(d,T,p), industrial formulation
function visc_dTp extends Modelica.Icons.Function; input SI.Density d "density"; input SI.Temperature T "temperature (K)"; input SI.Pressure p "pressure (only needed for region of validity)"; input Integer phase = 0 "2 for two-phase, 1 for one-phase, 0 if not known"; output SI.DynamicViscosity eta "dynamic viscosity"; end visc_dTp;