Fictitious increase of ambient temperature to account for the ventilation in a tunnel.

Symbol
$\Delta \theta_{\mathrm{0t}}$
Unit
K
Formulae
$\frac{\left(T_{\mathrm{e}} + T_{\mathrm{t}}\right) \left(- \theta_{\mathrm{a}} + \theta_{\mathrm{at_{\mathrm{0}}}}\right) e^{- \frac{L_{\mathrm{T}}}{L_{\mathrm{0}}}}}{T_{\mathrm{a}} + T_{\mathrm{e}} + T_{\mathrm{t}}}$
Related
$L_{\mathrm{0}}$
$L_{\mathrm{T}}$
$T_{\mathrm{a}}$
$T_{\mathrm{t}}$
$\theta_{\mathrm{a}}$
$\theta_{\mathrm{at_{\mathrm{0}}}}$
Used in
$I_{\mathrm{c}}$