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By applying the singularity subtraction technique to the unsteady driven cavity problem, the stability of the impulsively started flow is investigated, without smoothing the corner singularity. A second-order spectral projection method allows localization of the critical Reynolds number for the first Hopf bifurcation in the interval [8017.6, 8018.8).
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This article surveys preconditioning techniques for the iterative solution of large linear systems, with a focus on algebraic methods suitable for general sparse matrices. Covered topics include progress in incomplete factorization methods, sparse approximate inverses, reorderings, parallelization i
A new simulation code using the hybrid approximation for modeling extraterrestrial plasma processes is described, which can be used in an arbitrary three-dimensional, ordered, hexahedral grid. Maxwell's equations are transformed using common tensor analysis and solved by a finite differencing scheme