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33 lines
1.7 KiB
Groff
33 lines
1.7 KiB
Groff
.TH UPSCALE_ELASTICITY "1" "October 2023" "upscale_elasticity 2023.10" "User Commands"
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.SH NAME
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upscale_elasticity \- Upscale elastic parameters
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.SH SYNOPSIS
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upscale_elasticity [grid file] [option=value]
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.SH DESCRIPTION
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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.
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Example usage:
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upscale_elasticity gridfilename=filename.grdecl rock_list=rocklist.txt output=outfilename.txt
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.SH OPTIONS
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\fBgridfilename\fR Filename for grid file.
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.br
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\fBvtufilename\fR Save results to vtu file for visual inspection. If not specified, vtu results are not saved.
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.br
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\fBrock_list\fR A file with a list of one file per satnum specifying elastic properties for each rock type.
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.br
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\fBoutput\fR Filename for which results are written in ASCII format. If not specified, output is not written to file.
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.br
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\fBmethod\fR The kind of boundary couplings to use, can be 'mpc' or 'mortar'. Defaults to 'mortar' (best for non-perfect periodic grids).
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.br
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\fBEmin\fR Minimum E (youngs) modulus. Used to avid numerical issues if contrasts in grid is too large. Defaults to 0.
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.br
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\fBctol\fR Collapse tolerance in grid parsing. Defaults to 1e-6.
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.br
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\fBltol\fR Tolerance in iterative linear solvers. Defaults to 1e-8.
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.br
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\fBlinsolver_type\fR Type of solver for linear system. Possibilities are 'iterative' and 'direct' (LU factorization). Default is 'iterative'.
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.SH "REPORTING BUGS"
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Report on github repository <https://github.com/OPM/opm-upscaling/issues>
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