Discussion of Different Model Approaches for the Flow Behavior of Ice
Ice of Antarctic ice shelves is assumed to behave on long-term as an incompressible viscous fluid, which is dominated on short time scales by the elastic response. Hence, a viscoelastic material model is required. The thermodynamic pressure is treated differently in elastic and viscous models. For s...
| Published in: | PAMM |
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| Main Authors: | , , , |
| Format: | Article in Journal/Newspaper |
| Language: | unknown |
| Published: |
Wiley
2016
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| Subjects: | |
| Online Access: | https://epic.awi.de/id/eprint/45857/ https://epic.awi.de/id/eprint/45857/1/Christmann_et_al-2016-PAMM.pdf https://hdl.handle.net/10013/epic.51950 https://hdl.handle.net/10013/epic.51950.d001 |
| Summary: | Ice of Antarctic ice shelves is assumed to behave on long-term as an incompressible viscous fluid, which is dominated on short time scales by the elastic response. Hence, a viscoelastic material model is required. The thermodynamic pressure is treated differently in elastic and viscous models. For small deformations, the elastic isometric stress for ν → 0.5 gives similar results to those solving for pressure in an incompressible laminar flow model. A viscous model, in which the thermodynamic pressure is approximated by an elastic isometric stress, can be easily extended to viscoelasticity. |
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