## Group Um

Group Description |
FEM, electromagnetics, 2 cubes in a sphere. Evan Um, Geophysics, Stanford A matrix from Evan Um, Geophysics, Stanford. Studying finite-element time domain solvers for electromagnetic diffusion equations. The 3-D computational domain consists of 88,213 tetrahedral elements. The computational domain consists of the two parts. First, there are two 300m x 300m x 150m boxes where a fine mesh is used. Second, the two boxes are enclosed by a large sphere whose radius is 10 km. An element growth factor is used to increase the mesh size gradually inside the sphere. This is because absorbing boundary conditions are not very good choices for these problems. The finite element technique is edge-based rather than node-based. Therefore, the unknowns are amplitudes of electromagnetic fields on an edge of each element. |
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Displaying

**all 2**collection matricesId | Name | Group | Rows | Cols | Nonzeros | Kind | Date | Download File |
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1919 | 2cubes_sphere | Um | 101,492 | 101,492 | 1,647,264 | Electromagnetics Problem | 2008 | MATLAB Rutherford Boeing Matrix Market |

2283 | offshore | Um | 259,789 | 259,789 | 4,242,673 | Electromagnetics Problem | 2010 | MATLAB Rutherford Boeing Matrix Market |