Abstract: The electric field intensity together with its distribution of the spinnerets determines the electrospinning performance and the quality of the as-spun nanofibers. It is necessary to simulate and analyze the electric field of spinnerets in electrospinning so as to optimize the design. In this paper, the electric field strength and its distribution has been simulated using Finite Element Analysis software COMSOL MULTIPHYSICS. Effect of the geometry of spinneret on the electric was studied by comparison on the electric field of needle based and needleless electrospinning, the effect of experimental parameters on the electric field was investigated at the same time. It has been found that the electric field distributed on the top of the needle and both the ends of the cylinder, and cylinder yielded stronger electric field. This study would benefit the understanding of electrospinning principles and optimization design of needleless electrospinning.

Key words: electrospinning, electric field intensity, experimental condition, finite element analysis