ABSTRACT
There are many practical thermal conduction problems that can be solved using one-dimensional techniques because the temperature distribution and heat flux are functions of a single independent variable (approximately). Typically, the use of a one-dimensional conduction model is justified by a Biot number, as discussed in Section 2.5. However, there are many situations where the one-dimensional approach is not applicable and we must turn to a two- or three-dimensional formulation of the problem.
