8. Heisler Charts

Assumptions:

  • Uniform initial temperature (\(T_i\)) over the entire body.

  • Constant \(T_\infty\), step change in temperature.

  • Simple geometry: slab, cylinder, and sphere.

Limitations:

  • No heat generation.

  • For Fo \(> 0.2\).

Mid Plane Temperature:


Temperature Distribution:


Change in Thermal Energy Storage: