Group Goodwin

Group Description
Fluid mechanics matrices from Ralph Goodwin

Matrices from 2018:

    Finite element discretization of the Navier-Stokes and similar transport
    equations on various geometries:

    Goodwin_010
    Goodwin_013
    Goodwin_017
    Goodwin_023
    Goodwin_030
    Goodwin_040
    Goodwin_054
    Goodwin_071
    Goodwin_095
    Goodwin_127

Matrices from 1995:

The goodwin.rua matrix:

	A finite-element matrix from Ralph Goodwin, Chemical Engineering Dept.,
	Univ. of Illinois at Urbana-Champaign.  A fluid mechanics problem.
	From a nonlinear solver (Newton iterations.  Uses several back
	substitutions for the Sherman-Morrison formula to deal with a dense
	row  (not given in the matrix).

	The matrix was originally obtained in triplet (i,j,a_ij) format, with
	lots of duplicate entries (from unassembled finite elements). 
	Converted (and duplicates assembled) into RUA format by Tim Davis.

	email:  ralph :at the domain: wsnext.scs.uiuc.edu 

The rim.rua matrix: n=22560, nz=1014951.  Originally in triplet format with
	duplicate entries.  See comments below:


	From ralph :at the domain: wsnext.scs.uiuc.edu Mon May 22 16:31:26 1995

	Tim,

	I have another matrix that may interest you.  It is similar 
	to the matrix that you added to the Boeing-Harwell library.
	THere are 22560 equations.  The frontwidth is about 144.
	However pivoting consideration cause the frontwidth to grow
	to 2174.  I have not tried using UMFPACK with this matrix
	because my code requires 287 Mbytes to store the LU factors,
	and therefore goes out-of-core. Still if you are
	interested in a matrix that appears to have severe pivoting
	problems and is big then I have one for you.

	Ralph Goodwin

	From ralph :at the domain: wsnext Fri May 26 08:03:45 1995

	Tim,

	I solved my problem of excessive front width growth by rescaling
	the rows of the matrix, so I guess I sounded a false alarm.
	Previously, the front would grow from 155 to 2300, now it stays
	at 144.  I rescaled by the 1 norm of each row.

	Ralph

	From ralph :at the domain: wsnext.scs.uiuc.edu Fri May 26 14:27:21 1995

	Tim,

	I ftped the matrix to you.  It is in the
	directory incoming and is named  rim.mat.gz.  It is
	a 15Mb file that uncompresses to about 42Mb. The matrix
	is stored in triple format with the first two lines
	being the order of the matrix and the number of nonzeroes.
	There are duplicate nonzeroes that must be summed.

	Earlier I said that I scaled the rows by their 1 norm.
	This is not exactly correct. I scaled by the 1 norm 
	of the *unsummed* nonzeroes in the row, which is of
	course different than the 1 norm of the row.

	Ralph


	From ralph :at the domain: wsnext.scs.uiuc.edu Fri May 26 14:53:18 1995


	Yes, it is from the same application.  The physical properties
	are different (viscosity, density, ...) but otherwise it is
	the same problem.  One more thing about this problem is that
	it involves not only solving the steady Navier-Stokes (N-S) equations
	but also solving a pair of elliptic mesh generation (EMG) equations.
	The EMG equations are coupled to the N-S equations by
	boundary conditions. So the system of equations represented
	by the matrix I sent you (and also goodwin.rua) is both
	N-S equations and EMG equations all discretized using quadrilateral
	biquadratic finite elements. The main point is that the matrix
	is not just a discretization of the N-S equations.

	Ralph


Minor change, 3/31/03:  "rua" changed to "RUA", in rim.rua header.
Displaying all 12 matrices
Id Name Group Rows Cols Nonzeros Kind Date Download File
446 goodwin Goodwin 7,320 7,320 324,772 Computational Fluid Dynamics Problem 1995 MATLAB Rutherford Boeing Matrix Market
447 rim Goodwin 22,560 22,560 1,014,951 Computational Fluid Dynamics Problem 1995 MATLAB Rutherford Boeing Matrix Market
2817 Goodwin_010 Goodwin 1,182 1,182 32,282 Computational Fluid Dynamics 2018 MATLAB Rutherford Boeing Matrix Market
2818 Goodwin_013 Goodwin 1,965 1,965 56,069 Computational Fluid Dynamics 2018 MATLAB Rutherford Boeing Matrix Market
2819 Goodwin_017 Goodwin 3,317 3,317 97,773 Computational Fluid Dynamics 2018 MATLAB Rutherford Boeing Matrix Market
2820 Goodwin_023 Goodwin 6,005 6,005 182,168 Computational Fluid Dynamics 2018 MATLAB Rutherford Boeing Matrix Market
2821 Goodwin_030 Goodwin 10,142 10,142 312,814 Computational Fluid Dynamics 2018 MATLAB Rutherford Boeing Matrix Market
2822 Goodwin_040 Goodwin 17,922 17,922 561,677 Computational Fluid Dynamics 2018 MATLAB Rutherford Boeing Matrix Market
2823 Goodwin_054 Goodwin 32,510 32,510 1,030,878 Computational Fluid Dynamics 2018 MATLAB Rutherford Boeing Matrix Market
2824 Goodwin_071 Goodwin 56,021 56,021 1,797,934 Computational Fluid Dynamics 2018 MATLAB Rutherford Boeing Matrix Market
2825 Goodwin_095 Goodwin 100,037 100,037 3,226,066 Computational Fluid Dynamics 2018 MATLAB Rutherford Boeing Matrix Market
2826 Goodwin_127 Goodwin 178,437 178,437 5,778,545 Computational Fluid Dynamics 2018 MATLAB Rutherford Boeing Matrix Market