Читать книгу Electromagnetic Simulation Using the FDTD Method with Python - Dennis M. Sullivan - Страница 12

1 Get the program fd1d_1_1.py running. What happens when the pulse hits the end of the array? Why?

2 Modify the program so it has two sources, one at kc ‐ 20 and one at kc + 20. (Notice that kc is the center of the problem space.) What happens when the pulses meet? Explain this from basic electromagnetic (EM) theory.

3 Instead of Ex as the source, use Hy at k = kc as the source. What difference does it make? Try a two‐point magnetic source at kc ‐ 1 and kc such that hy[kc ‐ 1] = ‐ hy[kc]. What does this look like? To what does it correspond physically?