WEST0655: Chemical engineering plant models
Sixteen stage column section, some simplified

from set CHEMWEST, from the Harwell-Boeing Collection

Download as

Compressed MatrixMarket format file: west0655.mtx.gz (18728 bytes)
Compressed Harwell-Boeing format file: west0655.rua.gz (16234 bytes)

Visualizations

Click on image to get an enlarged version. Click on label to get an explanation.

Structure Plot	City Plot
Spectral Portrait	3D Interactive City Plot
	[ VRML Version 2, gzipped ] 347637 bytes

Matrix Statistics

Size	Type
655 x 655, 2854 entries	real unsymmetric
Nonzeros
total diagonal below diagonal above diagonal A-A' 2808 5 2237 566 5590
Column Data	Row Data
Average nonzeros per column : 4.3 Standard deviation : 3.9 index nonzeros longest 88 35 shortest 82 1	Average nonzeros per row : 4.3 Standard deviation : 3 index nonzeros longest 612 12 shortest 1 1
Bandwidths	Profile Storage
lower 565 upper 490 average |i-j| 1.4e+02 std.dev. 1.5e+02	min max ave. std.dev. lower bandwidth 1 565 1.6e+02 1.6e+02 upper bandwidth 2 614 2.6e+02 1.7e+02 Nonsymmetric skyline storage 274175
Heaviest diagonals
offset from main -28 -59 -64 -62 -54 -29 13 -30 -65 -58 nonzeros 52 43 35 31 31 31 31 30 29 29 accumulated percent 1.85 3.38 4.63 5.73 6.84 7.94 9.05 10.11 11.15 12.18 Top 10 out of 595 nonvoid diagonals.
Conditioning
Frobenius norm 7.1e+05 condition number (est.) 1.6e+12 2-norm (est.) 3.2e+05 diagonal dominance no

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