[aspect-devel] Handing nodes problem

[John Naliboff]

Hi Lev,

Do the velocity anomalies typically correlate with the local grid size? 

> This doesn't, however, seem to cause the velocity anomaly because I get it in different parts of the model every time, and the viscosity field is often smooth there with low values. 

In this case does “different parts” refer to the upper mantle only or the entire domain? 

A good diagnostic test here might be to try a series of models with constant grid spacing and see how this affects the location/timing/etc of the velocity anomaly. 

Cheers,
John
*************************************************
John Naliboff
Assistant Project Scientist, CIG
Earth & Planetary Sciences Dept., UC Davis






> On May 19, 2017, at 12:17 PM, Lev Karatun <lev.karatun at gmail.com> wrote:
> 
> Well, the viscosity is strongly strainrate-dependent in the model, that's why I get this effect I guess (not sure what to do about it, or if I should even do anything). This doesn't, however, seem to cause the velocity anomaly because I get it in different parts of the model every time, and the viscosity field is often smooth there with low values. 
> 
> Best regards,
> Lev Karatun.
> 
> 2017-05-19 13:17 GMT-04:00 cedric thieulot <c.thieulot at uu.nl <mailto:c.thieulot at uu.nl>>:
> Looking at the viscosity field, it kinda looks like suspicious in the darkest red regions, and reminds me of
> simulations whose velocity field is not smooth and converged, thereby leading to anormal element-based strainrate patterns.
> Ce/
> 
> 
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