Geodesic
Adaptive unstructured mesh generation methods for hydrogeological problems
Numerical methods and programming, Tome 16 (2015) no. 4, pp. 518-533.

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Two mesh generators embedded in the GeRa code for the solution of groundwater flow and radionuclide transport problems are discussed. The first one is a triangular-prismatic generator with the ability of cell degeneration; the second one is the polyhedral octree mesh generator implementing the cut-cell technology. These generators allow the user to automatically create conformal polyhedral adaptive grids in three-dimensional geological domains with consideration of complex boundaries, top and bottom geological layer surfaces, pinch-outs, and geological heterogeneities.
Keywords: mesh generator, hydrogeological modeling, triangular-prismatic meshes, octree meshes. 
@article{VMP_2015_16_4_a6,
     author = {A. V. Plenkin and A. Yu. Chernyshenko and V. N. Chugunov and I. V. Kapyrin},
     title = {Adaptive unstructured mesh generation methods for hydrogeological problems},
     journal = {Numerical methods and programming},
     pages = {518--533},
     publisher = {mathdoc},
     volume = {16},
     number = {4},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMP_2015_16_4_a6/}
}
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A. V. Plenkin; A. Yu. Chernyshenko; V. N. Chugunov; I. V. Kapyrin. Adaptive unstructured mesh generation methods for hydrogeological problems. Numerical methods and programming, Tome 16 (2015) no. 4, pp. 518-533. http://geodesic.mathdoc.fr/item/VMP_2015_16_4_a6/