3D simulation of multistage depressed collector using Mafia

Some 3D simulations of multistage depressed collector (MDC) were carried out. Here, some plots of those for the symmetric and the asymmetric are presented, and the simulations were made using Mafia software. A comparison on result has been made with that in MSDC, which is a CAD software developed in our institute. Comparing the results, both are in an agreement in some extent.