Eight Power Source Structure

thermalex02.in : Eight Power Source Structure

Requires: DevEdit 3D/Thermal 3D
Minimum Versions: Atlas 5.22.1.R

This example runs a thermal simulation of a 2 layer structure with 8 power sources. The main sequential tasks are:

  • Specification of all ten regions in DevEdit 3D
  • Specification of heat sink in in DevEdit 3D
  • Interface to Atlas
  • Selection of thermal models and material parameters
  • Solving of temperature distribution

This example is similar to the device described in Thermal Simulation and Design of a GaAs HBT Sample and Hold Circuit by Ken Poulton et al. The device technology is from the paper by R. Nubling in Technical Digest of 1990 GaAs IC Symposium pp53-56.

The structure in this example is defined using DevEdit 3D in a similar manner to the previous example. Initially the structure was defined using the graphical mode of DevEdit 3D. After the mesh was created, a command file was saved from DevEdit 3D enabling the structure to be re-created in DeckBuild.

Once in Atlas, the models thermal statement is used to indicate that this is a heat distribution simulation. The material statement is used to set the heat power output of each of the eight heat producing regions in this structure. Region #10 is defined to have a constant thermal conductivity of 1.0. The solve t1=300 statement sets the thermal boundary condition on the electrode to be 300K and then solves the heat flow equation self-consistently in the structure. The resulting 3D heat distribution can be shown in TonyPlot 3D.

To load and run this example, select the Load example button in DeckBuild. This will copy the input file and any support files to your current working directory. Select the run button to execute the example.