| Author | Message | ||
     AdamL (adaml) New member Username: adaml Post Number: 1 Registered: 01-2009 |
Hi, I have designed a 2-D channel through which I want to pass a particle (represented by a circle). How should I go about doing this? In all the example's I have looked at regarding moving meshes, the size of the mesh is changed, but not the position. I have tried to make the center and start point of a circle a variable dependent on time but this was not allowed as an error message said that it needed to be constant. I should also add that the particle should move because it is subjected to a force. Many thanks, Adam | ||
| Robert G. Nelson (rgnelson) Moderator Username: rgnelson Post Number: 1211 Registered: 06-2003 |
FlexPDE does not do dynamic re-connection of the mesh, so you cannot pull one mesh patch through another. You could, however, let the mesh ride with the particle and write the equations so that the channel and fluid move through the mesh. If neither the channel nor the particle changes shape, you would not need a moving mesh to do this. The domain definition is the initial shape, and so must be made up of constants, not time-dependent values. To make the mesh move, you must assign time-dependent positions and/or velocities through the equations for the surrogate mesh position variables. |