A very simple model describes the transfer of radionuclides from a weakly contaminated spot to the surrounding area. After 60 years, an accident caused a massive increase of contamination. The model itself is of no importance, but demonstrates the necessity to help the solver when discrete events occur.
Run the model and make a plot of the contamination of NearField and FarField.
Investigate the transfer Accident. It uses a condition to add a pulse contamination between year 60 and year 61. Can you see any traces of this pulse in the output plots?
Add two Discrete Event blocks – two major events occur in the model. At time = 60 years when the pulse begins, and at time = 61 years, when the pulse ends. You can create the blocks by right-clicking an empty diagonal cell in the matrix and choosing Other | Discrete Event.
Run a simulation. Is there any difference in the output?
Solution to the exercise