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problems:calving [2016/09/16 11:53] jtodd |
problems:calving [2019/10/18 10:05] (current) jtodd [3D Calving] |
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===== Calving ===== | ===== Calving ===== | ||
- | Iceberg calving is implemented in Elmer/ | + | Elmer/ |
- | ==== 2D Calving ==== | + | Both the 2D and 3D calving models implement the ' |
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+ | Any queries about calving in Elmer/Ice should be directed to [[http:// | ||
+ | ===== 2D Calving | ||
The 2D calving model operates on flowline domains, and consists of 2 main solvers: [[solvers: | The 2D calving model operates on flowline domains, and consists of 2 main solvers: [[solvers: | ||
- | ==== 3D Calving ==== | + | A simple 2D calving test case can be found in elmerice/ |
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+ | The 2D calving model is described in more detail in [[https:// | ||
+ | ===== 3D Calving ===== | ||
+ | |||
+ | The 3D calving model is significantly more complex and computationally demanding than the 2D case, due to the comparative difficulty of identifying calving events in a 3D domain ([[solvers: | ||
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+ | |||
+ | A 3D test case can be found at elmerice/ | ||
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+ | Recently, Joe Todd & Eef van Dongen have been working on overhauling/ | ||
+ | |||
+ | __External Dependencies: | ||
+ | |||
+ | GMSH - The meshing and remeshing associated with the 3D calving model requires gmsh to be installed on your system, somewhere in your PATH. | ||
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+ | NETCDF - for real applications, | ||
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+ | __Stability & Robustness__ | ||
+ | |||
+ | The repeated unsupervised remeshing in the 3D calving model occasionally produces low-quality or degenerate 3D elements, which cause problems for the flow solution. Various strategies have been employed in the Remesh solver to reduce the frequency of these problematic meshes. Additionally, | ||
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+ | __Typical Workflow__ | ||
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+ | {{ problems: | ||
- | The 3D calving model is significantly more complex than the 2D model, due to the comparative difficulty of identifying calving events in a 3D domain ([[solvers: | ||
- | === Requirements === | + | == References: |
- | * Working gmsh installation | + | Benn, D. I., Warren, C. R., & Mottram, R. H. (2007). Calving processes and the dynamics of calving glaciers. Earth-Science Reviews, 82(3–4), 143–179. DOI: 10.1016/ |
- | * ElmerGrid | + | |
- | * Realistic Velocity Field | + | |
- | ==== Crevasse Depth Calving Criterion ==== | + | Todd, J., & Christoffersen, |
- | Both the 2D and 3D calving models implement the ' |