d4bde033a4
'mex_ip_simple' now returning an indirection array/data array pair (akin to G.cells.facePos and G.cells.faces(:,1)) to account for wells.
89 lines
3.0 KiB
Matlab
89 lines
3.0 KiB
Matlab
function varargout = mex_ip_simple(varargin)
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%Compute 'ip_simple' inner product values using compiled C code.
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%
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% SYNOPSIS:
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% [BI, connPos, conns] = mex_ip_simple(G, rock)
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% [BI, connPos, conns] = mex_ip_simple(G, rock, W)
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%
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% PARAMETERS:
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% G - Grid data structure.
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%
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% rock - Rock data structure. Must contain a valid field 'perm'.
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%
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% W - Well data structure as defined by function 'addWell'.
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% OPTIONAL. Only processed if present and valid.
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%
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% RETURNS:
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% BI - An array of inner product values, ordered by the cells of the
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% input grid. The array contains SUM(DIFF(connPos) .^ 2)
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% elements.
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%
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% connPos - Indirection map of size [G.cells.num,1] into 'conns' table
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% (i.e., the connections or DOFs). Specifically, the DOFs
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% connected to cell 'i' are found in the submatrix
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%
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% conns(connPos(i) : connPos(i + 1) - 1)
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%
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% In the absence of wells, connPos == G.cells.facePos.
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%
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% conns - A (connPos(end)-1)-by-1 array of cell connections
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% (local-to-global DOF mapping in FEM parlance). In the
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% absence of wells, conns == G.cells.faces(:,1).
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%
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% NOTE:
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% As the return value 'BI' is but a simple data array value, it must be
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% subsequently assembled into the 'S.BI' sparse matrix before being used
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% to solve a flow problem using, e.g., the 'solveIncompFlow' function.
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%
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% Moreover, the 'solveIncompFlow' function expects its 'S' parameter to
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% specify a 'type' field which is consistent with the kind of matrix
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% stored within 'S'. In the case of 'ip_simple', the 'type' must be the
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% string value 'hybrid'.
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%
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% EXAMPLE:
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% G = computeGeometry(processGRDECL(makeModel3([100, 60, 15])));
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% K = logNormLayers(G.cartDims, [10, 300, 40, 0.1, 100]);
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% rock.perm = bsxfun(@times, [1, 100, 0.1], K(:));
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% rock.perm = convertFrom(rock.perm(G.cells.indexMap, :), ...
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% milli*darcy);
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%
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% t0 = tic;
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% [BI, connPos, conns] = mex_ip_simple(G, rock);
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% toc(t0)
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%
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% nconn = diff(connPos);
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% [i, j] = blockDiagIndex(nconn, nconn);
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%
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% S = struct('BI', sparse(i, j, BI), 'type', 'hybrid', 'ip', 'ip_simple')
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%
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% t0 = tic;
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% S2 = computeMimeticIP(G, rock)
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% toc(t0)
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%
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% norm(S.BI - S2.BI, inf) / norm(S2.BI, inf)
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%
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% SEE ALSO:
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% computeMimeticIP, solveIncompFlow, blockDiagIndex.
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%{
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#COPYRIGHT#
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%}
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% $Date$
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% $Revision$
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buildmex CFLAGS="\$CFLAGS -Wall -Wextra -ansi -pedantic ...
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-Wformat-nonliteral -Wcast-align -Wpointer-arith ...
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-Wbad-function-cast -Wmissing-prototypes -Wstrict-prototypes ...
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-Wmissing-declarations -Winline -Wundef -Wnested-externs ...
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-Wcast-qual -Wshadow -Wconversion -Wwrite-strings ...
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-Wno-conversion -Wchar-subscripts -Wredundant-decls" ...
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...
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-O -largeArrayDims -DCOMPILING_FOR_MATLAB=1 ...
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mex_ip_simple.c mimetic.c mrst_api.c ...
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-lmwlapack -lmwblas
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% Call MEX'ed edition.
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[varargout{1:nargout}] = mex_ip_simple(varargin{:});
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end
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