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  1. M

    PDE Helmholtz eq. in 3D + boundary value)

    Thanks, I have tried separation of variables but I'm not able to make the solution satisfy the boundary conditions and the sums are becoming quite hard to evaluate I think. (if you've done this would you like to show me?) In more detail I arrived with one factor that is a function of \rho...
  2. M

    PDE Helmholtz eq. in 3D + boundary value)

    Hi!This is a quite sophisticated problem, but it’s interesting and challenging! Consider the following case: Let’s say we have a 3-dimensional disk with a radius r_{2} and a thickness d (so it actually is a cylinder with a quite short height compared to radius). We’re interested in solving...
  3. M

    Electric field boundary equation implication at air/earth interface

    Hi! This is a quite sophisticated problem, but it’s fun and interesting! A coaxial current transmission line is short-circuited by a cylindrical disk in one of its ends. Let’s say that the disk and the coax cable have the radius r_{2} and that the disk has the thickness d. We’re interested...
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