Back to the list with more questions. I am trying now to model a diffusion problem in which my geometry has elements within elements. Basically what i have is a rectangular box and inside it i have an cyllinder open on one side, while is closed on the other end. How can i define the pov file, and the boundary conditions so that i can make the walls of the cyllinder adiabatic, preventing diffusion through the walls of the cylinder while allowing diffusion to take place through the base of the cylinder corresponding to the "open end" of the capillary?
Thank you very much!
Emilio
-- ############################################### Dr. Emilio Melero García Laboratorio de Estudios Cristalográficos, IACT Instituto de parasitología Lopez Neyra,
P.T. Ciencias de la Salud, E-18100 Armilla, Granada, España