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LNS 3937: 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 12585 9619 25512
Column Data Row Data
Average nonzeros per column : 6.5
Standard deviation : 3.2

indexnonzeros
longest35 13
shortest785 1

Average nonzeros per row : 6.5
Standard deviation : 3.1

indexnonzeros
longest1587 11
shortest1 1

Bandwidths Profile Storage
lower3203 upper3202
average |i-j|8.8e+02 std.dev.1.1e+03
minmaxave.std.dev.
lower bandwidth0 3202 1.4e+03 1.2e+03
upper bandwidth0 3201 1.1e+03 1.3e+03

Nonsymmetric skyline storage 10023720

Heaviest diagonals
offset from main0 1 -1 -16 16 -17 17 -2418 -784 784
nonzeros3203 2836 2742 1974 1974 737 737 658 658 658
accumulated percent12.6123.7734.5642.3350.1053.0055.9058.4961.0863.67

Top 10 out of 311 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: ]