FS 760 3: Chemical kinetics problems
STRAT stratospheric ionization study -- 3rd output time step

from set FACSIMILE, from the Harwell-Boeing Collection

Mixed kinetics diffusion problem from study of ionization in the stratosphere with 38 chemical species. The diffusion terms are small compared with the kinetics terms but large compared with 1 (particularly for the last matrix in the set).

Download as

Compressed MatrixMarket format file: fs_760_3.mtx.gz (55690 bytes)
Compressed Harwell-Boeing format file: fs_760_3.rua.gz (52186 bytes)

Visualizations

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Structure Plot	City Plot
Spectral Portrait

Matrix Statistics

Size	Type
760 x 760, 5976 entries	real unsymmetric
Nonzeros
total diagonal below diagonal above diagonal A-A' 5816 760 2541 2515 6808
Column Data	Row Data
Average nonzeros per column : 7.7 Standard deviation : 4.4 index nonzeros longest 41 21 shortest 181 1	Average nonzeros per row : 7.7 Standard deviation : 4.4 index nonzeros longest 41 21 shortest 181 1
Bandwidths	Profile Storage
lower 741 upper 741 average |i-j| 2.1e+02 std.dev. 2.2e+02	min max ave. std.dev. lower bandwidth 0 740 3.2e+02 2.3e+02 upper bandwidth 0 740 2.9e+02 2.4e+02 Nonsymmetric skyline storage 465778
Heaviest diagonals
offset from main 0 -1 1 -20 40 20 -40 100 120 300 nonzeros 760 418 418 258 180 160 119 119 106 100 accumulated percent 13.07 20.25 27.44 31.88 34.97 37.72 39.77 41.82 43.64 45.36 Top 10 out of 72 nonvoid diagonals.
Conditioning
Frobenius norm 4.5e+08 condition number (est.) 9.9e+19 2-norm (est.) 3.1e+08 diagonal dominance no

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Last change in this page: Wed Sep 22 13:33:38 US/Eastern 2004 [Comments: matrixmarket@nist.gov ]