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LNS 131: 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
Spectral Portrait 3D Interactive City Plot
spectral portrait

[ VRML Version 2, gzipped ] 65611 bytes


Matrix Statistics

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Size Type
131 x 131, 536 entries real unsymmetric
Nonzeros
totaldiagonalbelow diagonalabove diagonalA-A'
536 112 254 170 542
Column Data Row Data
Average nonzeros per column : 4.1
Standard deviation : 2.8

indexnonzeros
longest13 13
shortest26 1

Average nonzeros per row : 4.1
Standard deviation : 3.5

indexnonzeros
longest58 11
shortest1 1

Bandwidths Profile Storage
lower112 upper111
average |i-j|30 std.dev.37
minmaxave.std.dev.
lower bandwidth0 111 31 42
upper bandwidth0 110 23 36

Nonsymmetric skyline storage 6911

Heaviest diagonals
offset from main0 1 -1 -5 5 -6 6 -54 -52 -58
nonzeros112 53 47 27 27 22 22 16 15 12
accumulated percent20.9030.7839.5544.5949.6353.7357.8460.8263.6265.86

Top 10 out of 40 nonvoid diagonals.
Conditioning
Frobenius norm1.5e+10 condition number (est.)1.5e+15
2-norm (est.)9.8e+09 diagonal dominanceno


Set Information

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


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