| Author | Message | ||
     jayanta mukherjee (neo) Member Username: neo Post Number: 15 Registered: 05-2005 |
What would the syntax for writing the following periodic boundary condition along the sides AB and CD of a 2D Rectangular domain ABCD? E(x,0)=E(x,y=2L), where L is a constant. Length of the rectangle is L(along the y-axix). I understand the boundary condition with E(x,0)=E(x,y=L), but with E(x,0)=E(x,y=2L), I am getting an error. Please help. Neo | ||
| Victor Bense (indiana) Member Username: indiana Post Number: 4 Registered: 01-2005 |
Neo, Shouldn't this be: E(x,0)=E(x,y=2*L) add the '*' cheers, Victor | ||
| jayanta mukherjee (neo) Member Username: neo Post Number: 16 Registered: 05-2005 |
VICTOR, thanks , but its not about the multiplication sign. See that the problem geometry is such that FlexPDE is giving an error. I am working on a resonator problem. here the electric field repeats itself every after one round trip. can anybody help. neo | ||
| Robert G. Nelson (rgnelson) Moderator Username: rgnelson Post Number: 391 Registered: 06-2003 |
I don't understand what you are trying to do. You say the rectangle extends from Y=0 to Y=L, but you want to be periodic at Y=2*L. The position Y=2*L does not exist in the FlexPDE domain, so how can we force something to be periodic to it? Periodicity matches the values at nodes that exist in the mesh at different places. We can't match nodes that aren't there. | ||
| jayanta mukherjee (neo) Member Username: neo Post Number: 17 Registered: 05-2005 |
Dear RGN, I have already mentioned above the problem I am working on. Its a laser resonator problem, where the electric field is repeating itself every after one round trip. I fully understand what you are trying to say, but thats the periodic boundary condition I will have to apply. One way that this can be done is what is know as "unfolding the cavity". I just wanted to know whether there is any other way with which such a boundary condition can be implimented in FlexPDE. please tell me if you need any more clarification. Neo |