Conduction shape factor cable pack top/bottom

Symbol
$S_{cp,T}$
Formulas
$\frac{\frac{\pi}{2}}{0.785\ln\left(\frac{w_{b}}{w_{c}}\right)}$$w_b$ / $w_c$ ≤ 1.4
$\frac{\frac{\pi}{2}}{0.93\ln\left(0.948\frac{w_{b}}{w_{c}}\right)}$$w_b$ / $w_c$ > 1.4