Stephen DeWitt

icon indicating a website link https://scholar.google.com/citations?user=PnfnEFgAAAAJ&hl=en icon indicating an email [email protected]

icon company Oak Ridge National Laboratory (@ORNL) icon location Oak Ridge, TN icon location Computational materials scientist specializing in phase field modeling, high-performance computing, and additive manufacturing

Results 74 issues of Stephen DeWitt

Move convective heat transfer coefficient and convection/radiation reference temperatures to the 'boundary' input block

1 comment

These three parameters aren't fundamental material properties and are instead depend on the environment being simulated. I think these are a better fit for the `boundary` input block. Normally I...

Generalize input option for deactivated region to be a rectangular prism

Currently we have an input option in the `geometry` block of the input file to deactivate elements above a certain height (`material_height`). For certain simulations, especially of "repair" processes, we...

Merge `run` and `run_ensemble`

Once we allow ensembles of mechanics simulations then we should be able to merge `run` and `run_ensemble`. This is also a precursor to DA for thermomechanics.

Seg fault during covariance matrix construction for data assimilation only for particular numbers of MPI tasks

2 comment

Summary: An IMTS gear simulation crashes after data assimilation only for the case where 27 MPI processes are used. 9, 18, 30, and 60 all work. Test case: https://github.com/adamantine-sim/demonstration-cases/tree/main/IMTS_Parts/GEAR-OP04 To...