Poroelastic problem (structural problem)
Name ML_Geer
Group Janna
Matrix ID 2650
Num Rows 1,504,002
Num Cols 1,504,002
Nonzeros 110,686,677
Pattern Entries 110,879,972
Kind Structural Problem
Symmetric No
Date 2012
Author C. Janna, M. Ferronato, G. Pini
Editor T. Davis
Structural Rank 1,504,002
Structural Rank Full true
Num Dmperm Blocks 4,502
Strongly Connect Components 4,502
Num Explicit Zeros 193,295
Pattern Symmetry 100%
Numeric Symmetry 0%
Cholesky Candidate no
Positive Definite no
Type real
Download MATLAB Rutherford Boeing Matrix Market
Authors: Carlo Janna, Massimiliano Ferronato, Giorgio Pini        
Matrix type: Unsymmetric                                          
# equations:      1,504,002                                       
# non-zeroes:   110,879,972                                       
Problem description: Poroelastic problem (structural problem)     
The matrix ML_Geer has been obtained to find through a Meshless   
Petrov-Galerkin discretization the deformed configuration of an   
axial-symmetric porous medium subject to a pore-pressure drawdown.
Further information can be found in the following papers:         
1) M. Ferronato, A. Mazzia, G. Pini, and G. Gambolati. A meshless 
method for axi-symmetric poroelastic simulations: numerical       
study. International Journal for Numerical Methods in Engineering 
70 (2007), pp. 1346-1365.                                         
2) M. Ferronato, C. Janna and G. Pini. A generalized Block FSAI   
preconditioner for unsymmetric indefinite matrices. Journal of    
Computational and Applied Mathematics (2012), submitted.