SHERMAN4: Oil reservoir simulation challenge matrices
IMPES simulation with flow barriers (NX = 16, NY = 23, NZ = 3, NC = 1 )

from set SHERMAN, from the Harwell-Boeing Collection

Download as

Compressed MatrixMarket format file: sherman4.mtx.gz (31214 bytes)
Right-hand-side in MatrixMarket array format: sherman4_rhs1.mtx.gz (3329 bytes)
Compressed Harwell-Boeing format file: sherman4.rua.gz (30965 bytes)

Visualizations

Click on image to get an enlarged version. Click on label to get an explanation.

Structure Plot	City Plot
	3D Interactive City Plot
	[ VRML Version 2, gzipped ] 472949 bytes

Matrix Statistics

Size	Type
1104 x 1104, 3786 entries	real unsymmetric
Nonzeros
total diagonal below diagonal above diagonal A-A' 3786 1104 1341 1341 2682
Column Data	Row Data
Average nonzeros per column : 3.4 Standard deviation : 2.5 index nonzeros longest 429 7 shortest 1 1	Average nonzeros per row : 3.4 Standard deviation : 2.5 index nonzeros longest 429 7 shortest 1 1
Bandwidths	Profile Storage
lower 369 upper 369 average |i-j| 74 std.dev. 1.4e+02	min max ave. std.dev. lower bandwidth 1 369 1.2e+02 1.7e+02 upper bandwidth 1 369 1.2e+02 1.7e+02 Symmetric skyline storage requirement:270850
Heaviest diagonals
offset from main 0 -16 16 -1 1 -368 368 nonzeros 1104 501 501 481 481 359 359 accumulated percent 29.16 42.39 55.63 68.33 81.04 90.52 100.00 Top 7 out of 7 nonvoid diagonals.
Conditioning
Frobenius norm 5e+02 condition number (est.) 7.2e+03 2-norm (est.) 67 diagonal dominance yes

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Last change in this page: Wed Sep 22 13:33:54 US/Eastern 2004 [Comments: ]