Symbol
$T_{\mathrm{tw}}$
Unit
K.m/W
Formulae
$\frac{\rho_{\mathrm{t}}}{2 \pi} \ln{\left (\frac{Do_{\mathrm{t}}}{Di_{\mathrm{t}}} \right )}$
Related
$Di_{\mathrm{t}}$
$Do_{\mathrm{t}}$
$\rho_{\mathrm{t}}$
Used in
$T_{\mathrm{e}}$
$\theta_{\mathrm{to}}$
$\theta_{\mathrm{to_{\mathrm{z}}}}$