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FreeCAD FEM examples using Elmer backend

Requirements:

• FreeCAD 0.21.1
• ElmerSolver 9.0 (Rev: c82f31df0 is tested and it works)
• GMSH 4.10

This model simulates water flows heat sink. The model uses heat transfer and Stokes-Navier equations and calculates temperature, velocity and pressure fields.

This model simulates heating of a radiator with four transistors in TO-220 cases. Power dissipation of the transistors: 3.04 W, 1.91 W, 4 W and 0 W. Petals of radiator are surrounded air flow with velocity 0.05 m/s. The model uses heat transfer and Stokes-Navier equations. The model doesn't use radiation equations because of FreeCAD doesn't support them yet (but Elmer supports). So the temperature in the model higher than in experiment.