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IMPCOL A: Chemical engineering plant models
Heat exchanger network

from set CHEMIMP, 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 ] 71560 bytes


Matrix Statistics

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Size Type
207 x 207, 572 entries real unsymmetric
Nonzeros
totaldiagonalbelow diagonalabove diagonalA-A'
572 8 159 405 1108
Column Data Row Data
Average nonzeros per column : 2.8
Standard deviation : 1.4

indexnonzeros
longest1 5
shortest7 1

Average nonzeros per row : 2.8
Standard deviation : 1.7

indexnonzeros
longest17 8
shortest2 1

Bandwidths Profile Storage
lower168 upper20
average |i-j|17 std.dev.28
minmaxave.std.dev.
lower bandwidth0 167 15 33
upper bandwidth0 19 10 5.2

Nonsymmetric skyline storage 5098

Heaviest diagonals
offset from main12 11 10 9 7 14 13 5 8 6
nonzeros36 34 33 32 29 29 28 24 24 22
accumulated percent 6.2912.2418.0123.6028.6733.7438.6442.8347.0350.87

Top 10 out of 89 nonvoid diagonals.
Conditioning
Frobenius norm2.4e+03 condition number (est.)4.3e+07
2-norm (est.)8.6e+02 diagonal dominanceno


Set Information

Set CHEMIMP
Source: David Bogle, Imperial College, London
Discipline:Chemical engineering
Accession:August 1982


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Last change in this page: Wed Sep 22 13:33:31 US/Eastern 2004 [Comments: ]