| Author | Message | ||
     Sergii Shelestiuk (dozz) New member Username: dozz Post Number: 1 Registered: 09-2007 |
I'm a novice at programming with FlexPDE, and I wonder if it is possible to formulate two interrelated equations, one of which is defined in a bulk, and the other one is for boundary only. The original 2D-problem is the following (common boundary-value problem if it were not \theta_e present):  And additional boundary equation for \theta_e:  Is it possible to formulate this problem in FlexPDE? Notice that \theta_e is defined just at the boundary, so we can't just put it to EQUATIONS section with the one for \theta. Thanks in advance for your help! | ||
| Robert G. Nelson (rgnelson) Moderator Username: rgnelson Post Number: 962 Registered: 06-2003 |
FlexPDE has no provisions for special variables defined only on boundaries. You will have to define Theta_e everywhere in the domain. The boundary condition at x=0 is then straightforward. The remote reference at x=L can be done with an EVAL(Theta_e,0,z). This does not generate a direct coupling, however, and may be subject to oscillation or instability if the coupling is very strong. Only experiment can determine this. |