| Author | Message | ||
     Michael Daly (mdaly) Member Username: mdaly Post Number: 5 Registered: 12-2004 |
I am solving for the electric field in materials/air with a bias applied by electrodes. So far I have been doing DC voltages and approximating AC with DC values. Is there a better way to simulate an AC bias? | ||
| Robert G. Nelson (rgnelson) Moderator Username: rgnelson Post Number: 336 Registered: 06-2003 |
The usual way to handle AC signals is to use complex equations with the assumption your variable, say V, is given by V=A*exp(-i*omega*t). Plug this into your equations and give FlexPDE the real and imaginary component equations. For examples using this technique, see: "Samples | Time_Dependent | Stress | Harmonic.pde" "Backstrom_Books | Fields_of_Physics | d_Heat | Wave1.pde" "Vib4.pde" and "Vib44.pde" in "Backstrom_Books | Deformation_and_Vibration" most of the problems in "Backstrom_Books | Waves | Electrodynamics" You can download Prof. Backstrom's "Fields of Physics" from our bookshelf, and look at his other books on his website (linked from our bookshelf page). |