Radiation view factor coefficient for radiation thermal resistance calculation from one cable to another.

Symbol
$F_{\mathrm{ij}}$
Unit
-
Formulae
$\frac{0.5}{\pi} \left(\pi - \sqrt{c_{\mathrm{ij}}^{2} - \left(r_{\mathrm{ij}} - 1\right)^{2}} + \sqrt{c_{\mathrm{ij}}^{2} - \left(r_{\mathrm{ij}} + 1\right)^{2}} + \left(r_{\mathrm{ij}} - 1\right) \arccos{\left (\frac{1}{c_{\mathrm{ij}}} \left(r_{\mathrm{ij}} - 1\right) \right )} - \left(r_{\mathrm{ij}} + 1\right) \arccos{\left (\frac{1}{c_{\mathrm{ij}}} \left(r_{\mathrm{ij}} + 1\right) \right )}\right)$
Related
$c_{\mathrm{ij}}$
$F_{\mathrm{m}}$
$r_{\mathrm{ij}}$