4.2     QW-HFM internal module

The internal Heat Flow Module is integrated with QW-Simulator and is available in OMP and x64 version. The implementation of the internal Heat Flow Module takes into account the divided cells (without boundary conditions) and assures faster heat flow simulations. The internal QW-HFM module uses nonlinear model (it uses a phase-change model in the heat transfer analysis).

The list presented below states the steps performed by the internal QW-HFM module and has been repeated after the “Philosophy behind QW-BHM” section (see Philosophy behind QW-BHM). Please notice that after the step 3 is completed, the QW-BHM module can either proceed with the step 6 or – when instructed by the user by activating Allow Heat flow option in Export Options of QW-Editor – call internalQW-HFM module and execute step 4 and 5 automatically.

1.     We run the FDTD analysis with sinusoidal excitation until the electromagnetic steady-state is reached.

2.     We produce the 3D pattern of average dissipated power P(x,y,z).

3.     We upgrade the enthalpy (or rather enthalpy density) distribution.

4.     Current field values (enthalpy density field, dissipated power field, and temperature) are sent internally to the QW-HFM module.

5.     Internal QW-HFM module will perform some computations on the data.

6.     We upgrade the temperature distribution in each FDTD cell.