Finite-difference time-___domain method: Difference between revisions

Revision as of 09:35, 25 October 2005

Revision as of 09:38, 25 October 2005

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In order to use FDTD a computational ___domain must be established. The computational ___domain is simply the physical region over which the simulation will be performed. The E and H fields will be determined at every point in space within thethat computational ___domain. The material of each cell within the computational ___domain must be specified. Typically, the material will be either free-space (air), [[metal]], or [[dielectric]]. Any material can be used as long as the [[permeability]], [[permittivity]], and [[conductivity]] are specified.

Once the computational ___domain and the grid material is established, a source is specified. The source can be an impinging plane wave, a current on a wire, or an applied electric field, depending on the application.

Since the E and H fields are determined directly, the output of the simulation is usually the E or H field at a point or a series of point within the computational ___domain. The simulation evolves the E and H fields forward in time.

Processing may be done on the E and H fields returned by the simulation. Data processing may also occur while the simulation is ongoing.