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solvers:stress [2016/01/20 09:34]
gag [General Description] |
solvers:stress [2016/01/20 09:34]
gag [General Description] |
| <m>sigma_{ij} = 2 {eta} {epsilon}_{ij} - p delta_{ij} </m> \\ | <m>sigma_{ij} = 2 {eta} {epsilon}_{ij} - p delta_{ij} </m> \\ |
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| where <m>epsilon</m> is directly evaluated from the velocity field and <m>p</m> is the isotropic pressure.The convention is that a positive stress corresponds to a tensiile stress (opposite to the isotropic pressure convention). | where <m>epsilon</m> is directly evaluated from the velocity field and <m>p</m> is the isotropic pressure.The convention is that a positive stress corresponds to a tensile stress (opposite to the isotropic pressure convention). |
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| This solver doesn't work for the GOLF anisotropic ([[solvers:aiflow|AIFlow Solver]]) and the snow/firn ([[solvers:porous|Porous Solver]]) rheologies. Nevertheless, these two solvers have intrinsic functions which allow to compute the stress directly. | This solver doesn't work for the GOLF anisotropic ([[solvers:aiflow|AIFlow Solver]]) and the snow/firn ([[solvers:porous|Porous Solver]]) rheologies. Nevertheless, these two solvers have intrinsic functions which allow to compute the stress directly. |
