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- W2073782964 abstract "The present contribution discusses the development of a PSE-3D instability analysis algorithm, in which a matrix forming and storing approach is followed. Alternatively to the typically used in stability calculations spectral methods, new stable high-order finite- dierence-based numerical schemes for spatial discretization 1 are employed. Attention is paid to the issue of eciency, which is critical for the success of the overall algorithm. To this end, use is made of a parallelizable sparse matrix linear algebra package which takes advantage of the sparsity oered by the finite-dierence scheme and, as expected, is shown to perform substantially more eciently than when spectral collocation methods are used. The building blocks of the algorithm have been implemented and extensively validated, focusing on classic PSE analysis of instability on the flow-plate boundary layer, temporal and spatial BiGlobal EVP solutions (the latter necessary for the initialization of the PSE-3D), as well as standard PSE in a cylindrical coordinates using the nonparallel Batchelor vortex basic flow model, such that comparisons between PSE and PSE-3D be possible; excellent agreement is shown in all aforementioned comparisons. Finally, the linear PSE-3D instability analysis is applied to a fully three-dimensional flow composed of a counter-rotating pair of nonparallel Batchelor vortices." @default.
- W2073782964 created "2016-06-24" @default.
- W2073782964 creator A5060958347 @default.
- W2073782964 creator A5070593741 @default.
- W2073782964 date "2011-06-14" @default.
- W2073782964 modified "2023-09-30" @default.
- W2073782964 title "The PSE-3D instability analysis methodology for flows depending strongly on two and weakly on the third spatial dimension" @default.
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- W2073782964 doi "https://doi.org/10.2514/6.2011-3752" @default.
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