| Author | Message | ||
     Hossein Nili (hnili) Member Username: hnili Post Number: 4 Registered: 02-2008 |
Hi, Has anyone ever managed to define a sphere in 3D coordinates (not cylindrical)? I suppose due to the peculiar 'extrusion' feature of FlexPDE it's not possible to do so, is it?? | ||
| Hossein Nili (hnili) Member Username: hnili Post Number: 5 Registered: 02-2008 |
To be precise, I would like to define two spheres, within a cube. I have a point-and-plane electrode geometry (i.e. one electrode to which a positive DC voltage is applied is a small sphere and the second electrode to which a negative DC voltage is applied is a plane) and would like to solve the Laplace equation in 3D when a (larger) dielectric sphere is inserted between the former sphere and the plane. | ||
| Robert G. Nelson (rgnelson) Moderator Username: rgnelson Post Number: 1117 Registered: 06-2003 |
You can build 3D spheres in FlexPDE. The method is discussed in "Help->User Guide->Using FlexPDE in Three-Dimensional Problems->Shaped Layer Interfaces" Spheres are constructed in the following example problems: Samples | Misc | 3D_domains | 3d_BoxInSphere.pde Samples | Misc | 3D_domains | 3d_Shell.pde Samples | Misc | 3D_domains | 3d_Sphere.pde Samples | Misc | 3D_domains | Two_Spheres.pde Samples | Misc | Import-Export | 3d_Surf_Export.pde Samples | Moving_Mesh | 3D_Position_Blob.pde The scripts TwoZ_Surfgen.pde and TwoZ_Import.pde in the "Samples | Misc | 3D_domains | Adaptive_Surfaces" folder use spheres to demonstrate a more complex method of surface construction. This problem could be done more simply with two extra layers. |