We present the development of a two-dimensional Mixed-Hybrid Finite Element (MHFE) model for the solution of the non-linear equation of variably saturated ow in groundwater on unstructured triangular meshes. By this approach the Darcy velocity is approximated using lowest-order Raviart-Thomas (RT0)
On Reducible Linear Functional Differential Equations of Mixed Type
โ Scribed by Zhanyuan Hou
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 266 KB
- Volume
- 211
- Category
- Article
- ISSN
- 0025-584X
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โฆ Synopsis
There are occasions when a linear autonomous functional differential equation of mixed type can be reduced to a neutral or retarded equation. A necessary condition for such reducibility is shown to be that the set of solutions of the characteristic equation is bounded on the right in the complex plane. This condition is also sufficient for the reducibility of a class of mixed -type equations.
๐ SIMILAR VOLUMES
We study on the initial-boundary value problem for some degenerate non-linear wave equations of Kirchhoff type with a strong dissipation: When the initial energy associated with the equations is non-negative and small, a unique (weak) solution exists globally in time and has some decay properties.