changes.mady.by.user Arthur Aslanyan (Nafta College)
Saved on Nov 27, 2019
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\mbox{if} \, z < z_f \Rightarrow T_b(t,z) = T_f + (T_G(z) - T_f) \cdot \frac{2}{\sqrt{\pi}} \int_0^{(z_f -z)/\sqrt{4at}} e^{-\xi^2} d\xi
\mbox{if} \, z_f \leq z \leq z_f + h_f \Rightarrow T_b(t,z) = T_f
\mbox{if} \, z > z_f + h_f \Rightarrow T_b(t,z) = T_f + (T_G(z) - T_f) \cdot \frac{2}{\sqrt{\pi}} \int_0^{(z-z_f-h_f)/\sqrt{4at}} e^{-\xi^2} d\xi