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CEGB3024: Structural engineering matrices (unassembled)
Two-dimensional reactor core section

from set CEGB, from the Harwell-Boeing Collection

[Download] [Visualizations] [Matrix Statistics] [Set Information]


Note: The previously available version of this matrix in Matrix Market format refects an assembly which differs from what the contributor intended and has been withdrawn. Please discard it if you have taken a copy. The Harwell-Boeing file remains, but requires proper interpretation.


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Visualizations

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Structure Plot
structure plot


Matrix Statistics

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Size Type
3024 x 3024, 7748 entries pattern symmetric positive definite
Nonzeros
totaldiagonalbelow diagonalabove diagonalA-A'
79848 2996 38426 38426 0
Column Data Row Data
Average nonzeros per column : 26
Standard deviation : 9.4

indexnonzeros
longest2493 68
shortest385 0

Average nonzeros per row : 26
Standard deviation : 9.4

indexnonzeros
longest2493 68
shortest385 0

Bandwidths Profile Storage
lower286 upper286
average |i-j|79 std.dev.86
minmaxave.std.dev.
lower bandwidth0 285 1.6e+02 74
upper bandwidth0 285 1.6e+02 74

Symmetric skyline storage requirement:475998

Heaviest diagonals
offset from main0 -1 1 -2 2 -3 3 -4 4 -5
nonzeros2996 2615 2615 2234 2234 1987 1987 1740 1740 1475
accumulated percent 3.75 7.0310.3013.1015.9018.3920.8723.0525.2327.08

Top 10 out of 571 nonvoid diagonals.
Conditioning
Pattern matrix. No conditioning information.


Set Information

Set CEGB
Source: A.J. Donovan, CEGB, England.
Discipline:Finite-element calculations in structural engineering
Accession:Summer 1980


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Last change in this page: Wed Sep 22 13:33:30 US/Eastern 2004 [Comments: ]