[Opm] Version 2017.04 of the OPM simulation software suite has been released

[Andreas Lauser]

Dear OPM community,

The Open Porous Media project is glad to announce that version 2017.04 of the 
OPM suite of simulation software has been released:

http://opm-project.org/?p=890

Installation instructions can be found on our download page:

http://opm-project.org/?page_id=36

Certainly the most significant change of this release cycle is the introduction 
of the "flow_ebos" simulator. Compared to the previous "flow" simulators, 
"flow_ebos" uses a different approach to linearize the non-linear system of 
partial differential equations and for this reason exhibits significantly 
better performance. The new simulator is intended to eventually fully replace 
the current family of simulators (i.e., "flow", "flow_mpi", "flow_solvent",  
"flow_polymer", etc.) and unify them under the name "flow". Also, it should 
already provide a proper superset of the capabilities of the "flow" simulator 
of previous OPM releases and for this reason, the name "flow" has been made an 
alias for "flow_ebos" in OPM 2017.04. If, for some reason, the previous 
simulator must be used, it is still shipped as "flow_legacy" in this release, 
but we strongly encourage you to send us bug reports if you encounter any case 
that can be simulated using "flow_legacy" but not using the new "flow" 
simulator.

Besides the introduction of "flow_ebos", plenty unit tests have been added, a 
plethora of bugs has been fixed, well handling has been considerably improved 
and now supports e.g. top-hole pressure controls and vertical flow performance 
tables, ECL output and restart capabilities have been made much more 
comprehensive, and all grid related functionality of opm-core has been moved 
to the opm-grid module in preparation of the former module's eventual 
retirement. In addition, a Docker container has been uploaded to Docker Hub to 
ease deployment for people who are interested in container technologies.

Last but not least, I would like to thank everyone who contributed to making 
the many changes of this release happen so smoothly. It has been a pleasure to 
work with you!

Have fun with the new toy!
  Andreas
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