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LNSP3937: Fluid flow modeling

from set LNS, from the Harwell-Boeing Collection

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Visualizations

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Structure Plot City Plot
structure plot city plot


Matrix Statistics

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Size Type
3937 x 3937, 25407 entries real unsymmetric
Nonzeros
totaldiagonalbelow diagonalabove diagonalA-A'
25407 3203 12571 9633 25512
Column Data Row Data
Average nonzeros per column : 6.5
Standard deviation : 3.2

indexnonzeros
longest170 13
shortest2 1

Average nonzeros per row : 6.5
Standard deviation : 3.1

indexnonzeros
longest87 11
shortest1 1

Bandwidths Profile Storage
lower88 upper81
average |i-j|29 std.dev.36
minmaxave.std.dev.
lower bandwidth0 87 58 36
upper bandwidth0 80 57 34

Nonsymmetric skyline storage 447650

Heaviest diagonals
offset from main0 80 -80 5 -5 -2 -4 4 -78 -82
nonzeros3203 2696 2694 2646 2505 1454 923 800 721 720
accumulated percent12.6123.2233.8244.2454.1059.8263.4566.6069.4472.27

Top 10 out of 68 nonvoid diagonals.
Conditioning
Frobenius norm1.4e+12 condition number (est.)1.04e+17
2-norm (est.)3.3e+11 diagonal dominanceno


Set Information

Set LNS
Source: Ian Jones, Harwell Laboratory.
Discipline:Fluid flow modeling
Accession:Summer 1980


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Last change in this page: Wed Sep 22 13:33:43 US/Eastern 2004 [Comments: ]