Which Types of Boundary Conditions are Available?

Date	Category
2025-06-13 11:47:10	Heat

There are three different boundary conditions available:

• TemperatureBC:
  This specifies a fixed temperature at the boundary surface.

• HeatFluxBC:
  This boundary specifies heat flux normal to the boundary, which corresponds to the derivative of the temperature normal to the boundary.
  \(Q = k\frac{\partial T}{\partial n}\)

• ConvectionBC:
  This corresponds to convective heat transfer between the domain and the surrounding environment.
  \(-k\frac{\partial T}{\partial n} = h (T - T_\infty)\), where \(T_\infty\) is the temperature of the environment far from the surface.

For more information about the boundary conditions, please refer to our Heat solver technical article. For an example application, you can check our heat tutorial.