This function computes the Geometric Mean Distance of a cable.
The GMD is computed as
GMD = (d1 d2 d3)1/3,
where d1, d2, and d3 are the distances between the conductors.
function computeGMD input Modelica.Units.SI.Length d1 "Distance between conductors"; input Modelica.Units.SI.Length d2 = d1 "Distance between conductors"; input Modelica.Units.SI.Length d3 = 2*d1 "Distance between conductors"; output Modelica.Units.SI.Length GMD "Geometric Mean Distance"; end computeGMD;