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/* Thermal Boundary Conditions */
At the interface between the surface of a solid object and air, the convective boundary condition must be enforced:
<math>-k \frac{\partial T}{\partial n} = -h \left[ T(\mathbf{r}) - T_{amb\inf} \right] </math>
where T<sub>amb∞</sub> is the ambient temperature, and h is the coefficient of convective heat transfer having units of W/(m<sup>2</sup>.K).
The convective boundary condition is a special case of Robin boundary condition:
