Troubles with grounding line simulations
Posted: 27 Nov 2013, 08:10
Hi all, I am having trouble with grounding line simulations. More specifically, I tend to get very high mesh velocities in the vicinity of the grounding line, typically one or two elements upstream of the grounding line. This is mostly high vertical mesh velocities towards the upper free surface. And my simulations will typically fail at some point in either the upper or lower free surface solver. These high vertical velocities are at the spatial scale of individual elements.
So far I just have a simple domain with a linear downsloping bed and I'm spinning up from a slab of uniform thickness. I've tried this in both 2d (flowline) and 3d. I'm mostly running with resolution significantly finer than 1km and timesteps of a week to a month. Some simulations run for years or decades, but all fail at some point in the free surface solver.
Has anyone else had similar troubles?
Does anyone have a handy setup (sif + mesh/grd files) they would be happy to share, so I could check against my current setup?
Would it help if I post my sif and mesh files?
Do you think I should switch to using the internal mesh extrusion?
Cheers,
Rupert
So far I just have a simple domain with a linear downsloping bed and I'm spinning up from a slab of uniform thickness. I've tried this in both 2d (flowline) and 3d. I'm mostly running with resolution significantly finer than 1km and timesteps of a week to a month. Some simulations run for years or decades, but all fail at some point in the free surface solver.
Has anyone else had similar troubles?
Does anyone have a handy setup (sif + mesh/grd files) they would be happy to share, so I could check against my current setup?
Would it help if I post my sif and mesh files?
Do you think I should switch to using the internal mesh extrusion?
Cheers,
Rupert