NAME

       upscale_elasticity - Upscale elastic parameters

SYNOPSIS

       upscale_elasticity [grid file] [option=value]

DESCRIPTION

       Utility  that  generalizes Backus upscaling to general geometry. Elastic moduli specified on a cell-basis
       on corner-point grids can be upscaled to an elasticity tensor with possibly  21  independent  components.
       The  code  simulates  the 6 load conditions (three normal and three shear forces applied to the geometry)
       necessary for determining the elastic properties.

       Example usage:

       upscale_elasticity gridfilename=filename.grdecl rock_list=rocklist.txt output=outfilename.txt

OPTIONS

       gridfilename Filename for grid file.
       vtufilename Save results to vtu file for visual inspection. If not specified, vtu results are not saved.
       rock_list A file with a list of one file per satnum specifying elastic properties for each rock type.
       output Filename for which results are written in ASCII format. If not specified, output is not written to
       file.
       method The kind of boundary couplings to use, can be 'mpc' or 'mortar'. Defaults to  'mortar'  (best  for
       non-perfect periodic grids).
       Emin  Minimum  E  (youngs)  modulus.  Used  to  avid  numerical issues if contrasts in grid is too large.
       Defaults to 0.
       ctol Collapse tolerance in grid parsing. Defaults to 1e-6.
       ltol Tolerance in iterative linear solvers. Defaults to 1e-8.
       linsolver_type Type of  solver  for  linear  system.  Possibilities  are  'iterative'  and  'direct'  (LU
       factorization). Default is 'iterative'.

REPORTING BUGS

       Report on github repository <https://github.com/OPM/opm-upscaling/issues>

upscale_elasticity 2023.10                        October 2023                             UPSCALE_ELASTICITY(1)