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WEST1505: Chemical engineering plant models
Eleven stage column section, all rigorous

from set CHEMWEST, from the Harwell-Boeing Collection

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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 ] 146373 bytes


Matrix Statistics

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Size Type
1505 x 1505, 5445 entries real unsymmetric
Nonzeros
totaldiagonalbelow diagonalabove diagonalA-A'
5414 5 3190 2219 10812
Column Data Row Data
Average nonzeros per column : 3.6
Standard deviation : 3.7

indexnonzeros
longest88 27
shortest82 1

Average nonzeros per row : 3.6
Standard deviation : 2.4

indexnonzeros
longest602 12
shortest1 1

Bandwidths Profile Storage
lower1372 upper965
average |i-j|3.2e+02 std.dev.2.4e+02
minmaxave.std.dev.
lower bandwidth2 1487 3.4e+02 2.6e+02
upper bandwidth2 1460 5.6e+02 3.9e+02

Nonsymmetric skyline storage 1355332

Heaviest diagonals
offset from main13 12 10 16 -375 -332 -289 -246 -203 -31
nonzeros42 33 31 31 29 29 29 29 29 29
accumulated percent 0.78 1.39 1.96 2.53 3.07 3.60 4.14 4.67 5.21 5.74

Top 10 out of 1121 nonvoid diagonals.
Conditioning
Frobenius norm1.6e+06 condition number (est.)9e+12
2-norm (est.)3.2e+05 diagonal dominanceno


Set Information

Set CHEMWEST
Source: Art Westerberg, University of Pittsburgh
Discipline:Chemical engineering
Accession:Summer 1983


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Last change in this page: Wed Sep 22 13:33:32 US/Eastern 2004 [Comments: ]