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Thermal contact factor

Symbol
$M_k$
Unit
s$^{1/2}$
Formulae
$\frac{\sqrt{\frac{\sigma_{k2}}{\rho_{k2}}}+\sqrt{\frac{\sigma_{k3}}{\rho_{k3}}}}{2\sigma_{kc} \delta_k{\cdot}{10}^{-3}} F_k$
Related
$\delta_k$
Thickness of screen, sheath or armour [mm]
$F_k$
Imperfect contact thermal factor
$\rho_{k2}$
Thermal resistivity of the layer located above [K.m/W]
$\rho_{k3}$
Thermal resistivity of the layer located below [K.m/W]
$\sigma_{k2}$
Specific isobaric volumetric heat capacity of layer located below [J/(K.m$^3$)]
$\sigma_{k3}$
Volumetric heat capacity of layer located above [J/(K.m$^3$)]
$\sigma_{kc}$
Volumetric heat capacity of metallic component [J/(K.m$^3$)]
Used in
$\epsilon_k$
Heat loss allowance factor