Janna/Serena
gas resevoir simulation for CO2 sequestration
Name 
Serena 
Group 
Janna 
Matrix ID 
2541 
Num Rows

1,391,349 
Num Cols

1,391,349 
Nonzeros

64,131,971 
Pattern Entries

64,531,701 
Kind

Structural Problem 
Symmetric

Yes 
Date

2011 
Author

C. Janna, M. Ferronato 
Editor

T. Davis 
Structural Rank 
1,391,349 
Structural Rank Full 
true 
Num Dmperm Blocks

9,229 
Strongly Connect Components

9,229 
Num Explicit Zeros

399,730 
Pattern Symmetry

100% 
Numeric Symmetry

100% 
Cholesky Candidate

yes 
Positive Definite

yes 
Type

real 
Download 
MATLAB
Rutherford Boeing
Matrix Market

Notes 
Authors: Carlo Janna and Massimiliano Ferronato
Symmetric Positive Definite Matrix
# equations: 1,391,349
# nonzeroes: 64,531,701
Problem description: structural problem
The matrix Serena is obtained from a structural problem
discretizing a gas reservoir with tetrahedral Finite Elements.
The medium is strongly heterogeneous and characterized by a
complex geometry consisting of alternating sequences of thin
clay and sand layers. Some further information may be found
in the paper:
M. Ferronato, G. Gambolati, C. Janna, P. Teatini. "Geomechanical
issues of anthropogenic CO2 sequestration in exploited gas fields",
Energy Conversion and Management, 51, pp. 19181928, 2010.
