Adiabatic Boundary Condition¶

An adiabatic condition enforces zero normal heat flux across a boundary:

\[ q_n = -\hat{n} \cdot (\kappa \nabla T) = 0. \]

\(q_n\) - outward normal heat flux [W/m\(^2\)]
\(\hat{n}\) - outward unit normal
\(\kappa\) - thermal conductivity [W/(m K)]
\(T\) - solid temperature [K]

Applicability¶

The adiabatic boundary condition is applied when no heat transfer occurs across a solid boundary. It represents a perfectly thermally insulated surface, for which the normal heat flux vanishes.

Typical use cases¶

Perfect thermal insulation
Symmetry planes (no normal heat flow)
Boundaries in vacuum without radiation modeling

Example¶

condition = AdiabaticBoundaryCondition(
    name = "My Adiabatic Boundary Condition",
    marker = my_marker,
)