Automatic enmeshment of 2D grid based on BFC was investigated

which overcame the problems in lower continuum of simulated results and lower adaptability for irregular region boundary in rectangular coordinates.Automatic enmeshment of BFC grid was developed for 2D single line domain regular graphic and 2D double-line domain arbitrary graphic based on analyzing DXF document by adopting elliptical partial differential equation generating BFC grid.The results show that the program exhibits desirable universality

which can realize automatic enmeshment for the most complicate region

meanwhile

generated grid can smoothly adapt to the curvature variation of physical domain

and grid distribution in physical domain seems to be desirable.