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FS 183 4: Chemical kinetics problems
PSMOG atmospheric polution study -- 3rd output time step

from set FACSIMILE, from the Harwell-Boeing Collection

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Straight chemical kinetics problem from atmospheric pollution studies. This is an example at the large end of the range of spatially homogeneous problems from straight chemical kinetics calculations.


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Visualizations

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Matrix Statistics

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Size Type
183 x 183, 1069 entries real unsymmetric
Nonzeros
totaldiagonalbelow diagonalabove diagonalA-A'
1069 183 447 439 1402
Column Data Row Data
Average nonzeros per column : 5.8
Standard deviation : 12

indexnonzeros
longest1 105
shortest52 1

Average nonzeros per row : 5.8
Standard deviation : 9.1

indexnonzeros
longest2 72
shortest5 2

Bandwidths Profile Storage
lower182 upper152
average |i-j|62 std.dev.50
minmaxave.std.dev.
lower bandwidth0 181 78 56
upper bandwidth0 151 61 52

Nonsymmetric skyline storage 25235

Heaviest diagonals
offset from main0 -1 1 -94 -83 -95 -93 -8 11 121
nonzeros183 27 14 12 9 8 7 6 6 6
accumulated percent17.1219.6420.9522.0822.9223.6724.3224.8825.4426.01

Top 10 out of 304 nonvoid diagonals.
Conditioning
Frobenius norm1.1e+09 condition number (est.)1.9e+11
2-norm (est.)1.1e+09 diagonal dominanceno


Set Information

Set FACSIMILE
Source: Alan Curtis, Computer Science and Systems Division, AERE Harwell.
Discipline:Chemical kinetics
Accession:August 1983


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Last change in this page: Wed Sep 22 13:33:38 US/Eastern 2004 [Comments: ]