檢視 $useperiodicboun 的原始碼

$useperiodicboun is the command to assign the periodic boundary point. In 3D-DDCC, you need to assign the periodic point in your boundary condition

Command format is as following:

 $useperiodicboun
 periodic_point_filename 


For example 
 $useperiodicboun
 Micro_LED.msh.periodic.txt


The fileformat of periodic_point_filename  should be

 N_num
 Point_1   point_1_p
 Point_1   point_1_p
 Point_1   point_1_p
 Point_1   point_1_p
 Point_1   point_1_p
 ....
 ....  N_num lines.  


For example: for the mesh grid as following, the left and right hand side are periodic boundary

 01---02---03---04---05
 |    |    |    |    |
 06---07---08---09---10
 |    |    |    |    |
 11---12---13---14---15
 |    |    |    |    |
 16---17---18---19---20
 |    |    |    |    |
 21---22---23---24---25

The file format of Micro_LED.msh.periodic.txt would be  
 
 5
 1  5
 6  10
 11 15
 16 20
 21 25