Thermal Option

The thermal option in 3DEC allows the simulation of transient heat conduction. There are two separate formulations of the thermal logic. The first is a numerical formulation using the explicit or implicit finite difference method. This method is more accurate for short times, and includes thermal-mechanical fluid coupling. The second is an analytical formulation that uses superposition of point heat sources in an infinite medium. This method is suitable for long thermal times and is very fast. The comparative features of the two methods are listed below.

Table 1: Comparison of Features Available with Numerical vs Analytical Formulations
feature numerical analytical
thermal mechanical coupling yes yes
thermal fluid coupling yes no
thermal convection in fluid yes no
temperature boundary yes no
thermal flux boundary yes no
thermal convection boundary yes no
adiabatic boundary yes yes
nonhomogeneous thermal block properties yes no
heat sources yes yes