This corresponds to $σ*A_i$

Symbol
$Q_{\mathrm{i1}}$
Unit
J/m.K
Formulae
$2.5 \cdot 10^{-7} d_{\mathrm{c}} \pi \sigma_{\mathrm{i}} \left(D_{\mathrm{1}} - d_{\mathrm{c}}\right)$
Related
$D_{\mathrm{1}}$
$d_{\mathrm{c}}$
$\sigma_{\mathrm{i}}$
Used in
$Q_{\mathrm{A}}$
$Q_{\mathrm{B_{\mathrm{i}}}}$