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- W2051295494 abstract "We are presenting an incomplete factorization preconditioner for the boundary integral formulation of the time harmonic Helmholtz equation in 3D. Out of the matrix of the near field interactions of a Fast Boundary Element Method, we are constructing the preconditioner using an incomplete LU-factorization provided in the SPARSKIT V. 2 package by Saad. This preconditioner is tested and discussed for Restarted GMRes and for CGNR. Application showed little influence on internal problems. Therefore, the paper is dedicated to external problems only. These problems solved by the hypersingular formulation of Burton and Miller is strongly affected by this preconditioner. Especially for non-smooth surfaces, the preconditioner reduces the number of iterations needed by GMRes or CGNR significantly. Examples that are investigated are a cat's eye, a tire noise problem and a piston compressor." @default.
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- W2051295494 date "2003-07-01" @default.
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- W2051295494 title "Performance of iterative solvers for acoustic problems. Part II. Acceleration by ILU-type preconditioner" @default.
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- W2051295494 doi "https://doi.org/10.1016/s0955-7997(03)00016-x" @default.
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