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solvers:ssa [2013/12/10 12:57] gag [General Description] |
solvers:ssa [2017/05/19 05:20] (current) tzwinger [General Description] |
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==== General Informations ==== | ==== General Informations ==== | ||
- | :!: **Important changes have been made in '' | + | :!: **Important changes have been made in '' |
* **Solver Fortran File:** '' | * **Solver Fortran File:** '' | ||
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The '' | The '' | ||
- | Contrary to the NS solver, the gravity must be orientated along the z-axis and it taken form the value of | + | Contrary to the NS solver, the gravity must be orientated along the z-axis and is taken from the value of |
'' | '' | ||
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Note that in the absence of explicit boundary condition (no dirichlet condition or '' | Note that in the absence of explicit boundary condition (no dirichlet condition or '' | ||
- | The SSA velocities and pressure can be use, for example, as initial conditions for the Stokes Solver. | + | The SSA velocities and pressure can be used, for example, as initial conditions for the Stokes Solver. |
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=== Basal friction === | === Basal friction === | ||
- | Since version | + | Since version |
- | * a linear friction law, | + | * a linear friction law |
+ | < | ||
* a Weertman type friction law | * a Weertman type friction law | ||
+ | < | ||
* a Coulomb type friction law | * a Coulomb type friction law | ||
- | < | + | < |
- | where \\ | + | where |
- | < | + | < |
and | and | ||
< | < | ||
- | The two latests are non-linear and a Newton linearisation can be used. The friction law is chosen using the keyword '' | + | The two latests are non-linear and a Newton linearisation can be used. The friction law is chosen using the keyword '' |
+ | * a linear friction law | ||
+ | * '' | ||
+ | * a Weertman type friction law | ||
+ | * '' | ||
+ | * '' | ||
+ | * '' | ||
+ | * a Coulomb type friction law | ||
+ | * '' | ||
+ | * '' | ||
+ | * '' | ||
+ | * '' | ||
+ | * '' | ||
+ | * '' | ||
+ | * '' | ||
+ | When < | ||
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==== Examples ==== | ==== Examples ==== | ||
- | For examples look in your elmer source distribution under '' | + | For examples look in your elmer source distribution |