| Author | Message | ||
     Mehdi Naderi (mnader4) Member Username: mnader4 Post Number: 47 Registered: 12-2006 |
Dear Mr. Nelson, I will appreciate if you can help me. in a heat conduction problem with different materials, Should I define contact boundary condition between two different materials or natural(temperature)=0 or something else? Regards, | ||
| Marek Nelson (mgnelson) Moderator Username: mgnelson Post Number: 47 Registered: 07-2007 |
That really depends on what you want to model... If you just define regional parameters, with no internal boundary conditions, FlexPDE will calculate a continuous solution with flux continuity across the material interface (this is usually the desired result). If you want to model something where there is a discontinuous solution at the material interface (like a corroded interface in an electric conductor) then you can use the CONTACT boundary facility. Defining a NATURAL boundary condition on an internal material boundary acts like a source or a sink. This is seldom useful in defining a physically realistic problem, but occasionally it makes sense. |