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ORSIRR 2: Oil reservoir simulation - generated problems
oil reservoir simulation for 21x21x5 irregular grid

from set OILGEN, from the Harwell-Boeing Collection

[Download] [Visualizations] [Matrix Statistics] [Set Information]


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Visualizations

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Structure Plot City Plot
structure plot city plot
Spectral Portrait 3D Interactive City Plot
spectral portrait

[ VRML Version 2, gzipped ] 145668 bytes


Matrix Statistics

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Size Type
886 x 886, 5970 entries real unsymmetric
Nonzeros
totaldiagonalbelow diagonalabove diagonalA-A'
5970 886 2542 2542 2990
Column Data Row Data
Average nonzeros per column : 6.7
Standard deviation : 1.4

indexnonzeros
longest858 14
shortest851 3

Average nonzeros per row : 6.7
Standard deviation : 1.4

indexnonzeros
longest858 14
shortest851 3

Bandwidths Profile Storage
lower555 upper555
average |i-j|61 std.dev.1.3e+02
minmaxave.std.dev.
lower bandwidth1 555 78 1.1e+02
upper bandwidth1 555 78 1.1e+02

Symmetric skyline storage requirement:136618

Heaviest diagonals
offset from main0 -1 1 -8 8 -74 74 -64 64 -4
nonzeros886 734 734 503 503 296 296 256 256 140
accumulated percent14.8427.1439.4347.8656.2861.2466.2070.4974.7777.12

Top 10 out of 437 nonvoid diagonals.
Conditioning
Frobenius norm1.5e+06 condition number (est.)1.7e+05
2-norm (est.)4.6e+05 diagonal dominanceyes


Set Information

Set OILGEN
Source: Roger Grimes, Boeing Computer Services, Seattle, Washington.
Discipline:Oil reservoir simulation
Accession:Spring 1984


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Last change in this page: Wed Sep 22 13:33:47 US/Eastern 2004 [Comments: ]