Vermeer constant for convection heat transfer

This constant was introduced by J. Vermeer with a value of 0.16375 in the paper: 'A simple formula for the calculation of the convective heat transfer between conductor and sheath in compressed gas insulated (CGI) cables', 1983 as published in Elektra 87.

Symbol
$K_{vermeer}$
Formulae
$0.158 \pi \left(\beta_{gas} g\right)^{0.333}$