Abstract: Multi-needle electrospinning is an effective approach to increase the nanofiber production，where there are difficulties in the control of field intensity though. In this paper, COMSOL Multiphysics coupled fields finite element simulation software was employed to simulate the distribution and magnitude of the electric field in multi-needle electrospinning process,which was modified by employing three measures including unequal needle length, unequal needle spacing and circular needle layout, aiming to improve the uniformity of the whole electric field intensity. The foresaid three methods were evaluated by means of finite element simulation. In addition, auxiliary electrodes were applied to the multi-needle electrospinning process, in order to reduce the instability during the spinning process by controlling the electric field direction, resulting in the enhancement of spinning efficiency.

Key words: electrospinning, multi-needle, finite element, improvement