Brethour/coater1 graph

Matrix: Brethour/coater1

Description: Lid-driven cavity, coating flow J. Brethour, CEMS, U. Minn

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  • Matrix group: Brethour
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  • download as a MATLAB mat-file, file size: 68 KB. Use UFget(375) or UFget('Brethour/coater1') in MATLAB.
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    Brethour/coater1

    dmperm of Brethour/coater1

    scc of Brethour/coater1

    Matrix properties
    number of rows1,348
    number of columns1,348
    nonzeros19,457
    structural full rank?no
    structural rank1,331
    # of blocks from dmperm85
    # strongly connected comp.262
    explicit zero entries0
    nonzero pattern symmetry 59%
    numeric value symmetry 40%
    typereal
    structureunsymmetric
    Cholesky candidate?no
    positive definite?no

    authorJ. Brethour
    editorT. Davis
    date1997
    kindcomputational fluid dynamics problem
    2D/3D problem?yes

    Ordering statistics:AMD METIS
    nnz(chol(P*(A+A'+s*I)*P'))73,686 59,940
    Cholesky flop count6.7e+06 4.0e+06
    nnz(L+U), no partial pivoting146,024 118,532
    nnz(V) for QR, upper bound nnz(L) for LU103,217 103,521
    nnz(R) for QR, upper bound nnz(U) for LU263,580 290,030

    Maintained by Tim Davis, last updated 30-Sep-2008.
    Matrix pictures by cspy, a MATLAB function in the CSparse package.
    Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.