@Cerberus204498 It should be fine to have boundaries that are non-rectangular. You can represent circular boundaries as an approximation by having a stepped boundary. You are still restricted to using boundaries that run in the x or y direction but you can step them at a fine enough cell size to approximate a circular surface to the wavefront. That would be the easiest thing to do and it would not require any reformulations. I haven't looked into FDTD methods for non-Cartesian systems.
Thank you for your reply) At that moment I was finding for some appropriate way to simulate some structures with gold parts. And It was necessary to take into account dispersion of this metal... Perfect metal is not satisfactory model for my purposes, but thank you for reply once again!)))
All obstacles are assumed to be perfectly conducting metals although with a FDTD code it is an easy modification to have dielectric scatterers. Dielectric inhomogeneities can be simulated simply by making the permittivities and/or permeabilities spacially dependent. Simulating PEC can be done the same way but since it is a limiting case it is easier to enforce the PEC boundary conditions where appropriate.
heyo man, is there any chance to use the PML method into a circular cross section?
Cerberus204498 1 year ago
@Cerberus204498 It should be fine to have boundaries that are non-rectangular. You can represent circular boundaries as an approximation by having a stepped boundary. You are still restricted to using boundaries that run in the x or y direction but you can step them at a fine enough cell size to approximate a circular surface to the wavefront. That would be the easiest thing to do and it would not require any reformulations. I haven't looked into FDTD methods for non-Cartesian systems.
Born2bwire 1 year ago
Nice video!!
In my video Quantum Mechanics an artist view Time has symmetry and geometry that can explain the two slit experiment of Quantum Physics.
nickharvey7 2 years ago
Thank you for your reply) At that moment I was finding for some appropriate way to simulate some structures with gold parts. And It was necessary to take into account dispersion of this metal... Perfect metal is not satisfactory model for my purposes, but thank you for reply once again!)))
rainb0w1618 2 years ago
How does you simulated screen with slits? Was it metal?
rainb0w1618 2 years ago
All obstacles are assumed to be perfectly conducting metals although with a FDTD code it is an easy modification to have dielectric scatterers. Dielectric inhomogeneities can be simulated simply by making the permittivities and/or permeabilities spacially dependent. Simulating PEC can be done the same way but since it is a limiting case it is easier to enforce the PEC boundary conditions where appropriate.
Born2bwire 2 years ago