| Author | Message | ||
     alexander feldermann (student_ee) New member Username: student_ee Post Number: 1 Registered: 11-2003 |
hi, i'm going to evaluate the impedance z of a high-current-conduction-system in 3d for my diploma-thesis. for this i have to compute 7 equations: first the scalar-potential V as div(eps*grad(V))=0 to get the current-density J. when i have J, i can evaluate the complex vector-potential A to get the magnetic field, eddy-currents a.s.o.: del2(Are)=-mue(J+omega*kappa*Aim) (3x, 1x for each dimension) del2(Aim)=-mue(J+omega*kappa*Are) (3x,1x for each dimension) in order to get quick results and because my ram is limited, i tried to compute the values in 2 or more steps by using the transfer-function. unfortunately i found out, that e.g. the current density, imported to another pde-file in not shown as it is in the first file, where it was computed. especially at the material-boundaries i got more or less senseless values for J. i tried different ways to transfer the data (i transferred V,each component of E and each component of J) with the same result. what is the nature of this problem, how can i solve or elude it? thanks for answer and support! | ||
| Robert G. Nelson (rgnelson) Moderator Username: rgnelson Post Number: 68 Registered: 06-2003 |
My first thought was that a limitation of the transfer input processor was causing the trouble. Transfer files are written in separate sections for each material region, and can support discontinuous fields. But the input processor maps the data to a single mesh, thus requiring continuous quantities for proper transfer. This interpretation would suggest that transferring V and recomputing J from Grad(V) should have solved the problem. But you say that this didn't help, so I am mystified. Send me the pde files, and I'll take a look at it. |