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H2Lib
3.0
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Representation of a trial space with lowest order Raviart-Thomas basis functions on a two-dimensional triangular mesh. More...
#include <tri2drt0.h>
Data Fields | |
| pctri2d | t2 |
| Triangular mesh, represented by tri2d object. | |
| uint | ndof |
| Number of degrees of freedom (here: inner edges + Dirichlet edges). | |
| uint | nfix |
| Number of fixed edges (here: Neumann edges). | |
| uint * | is_dof |
| Determines whether an edge is a degree of freedom or fixed. More... | |
| uint * | idx2dof |
| Consecutive indices for all degrees of freedom and all fixed edges. | |
Representation of a trial space with lowest order Raviart-Thomas basis functions on a two-dimensional triangular mesh.
Since the mesh itself is represented by a tri2d object, we only have to keep track of which edges are degrees of freedom and provide them with consecutive indices for the algebraic functions.
The remaining edges are also provided with consecutive indices, allowing us to construct interaction matrices that describe how non-zero values in the fixed edges influence the right-hand side of a variational equation. This mechanism is useful, e.g., for handling inhomogeneous Dirichlet boundary conditions.
| uint* is_dof |
Determines whether an edge is a degree of freedom or fixed.
After the call of new_tri2drt0 : 0 inner edge, 1 boundary edge. Use 1 Dirichlet edge and 2 Neumann edge for mixed boundary conditions
1.8.11
