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SAYLR1: Saylor's petroleum engineering/reservoir simulation matrices
2D reservior (14x17)

from set SAYLOR, from the Harwell-Boeing Collection

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A small linear system of 238 unknowns resulting from a 2D reservoir simulation based on field data. It is a simple problem and is used as a baseline comparison in Saylor's work.


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Matrix Statistics

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Size Type
238 x 238, 1128 entries real unsymmetric
Nonzeros
totaldiagonalbelow diagonalabove diagonalA-A'
1128 238 445 445 314
Column Data Row Data
Average nonzeros per column : 4.7
Standard deviation : 0.48

indexnonzeros
longest16 5
shortest1 3

Average nonzeros per row : 4.7
Standard deviation : 0.48

indexnonzeros
longest16 5
shortest1 3

Bandwidths Profile Storage
lower15 upper15
average |i-j|6 std.dev.6.5
minmaxave.std.dev.
lower bandwidth1 15 14 3.1
upper bandwidth1 15 14 3.1

Symmetric skyline storage requirement:6536

Heaviest diagonals
offset from main0 -14 14 -1 1
nonzeros238 224 224 221 221
accumulated percent21.1040.9660.8280.41100.00

Top 5 out of 5 nonvoid diagonals.
Conditioning
Frobenius norm8.9e+08 condition number (est.)1.6e+09
2-norm (est.)4.8e+08 diagonal dominanceno


Set Information

Set SAYLOR
Source: Richard Kendall, Don Peaceman, Herb Stone, and Bill Watts, Exxon
Discipline:Oil reservoir modeling
Accession:Summer 1984


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Last change in this page: Wed Sep 22 13:33:50 US/Eastern 2004 [Comments: ]