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A subspace-accelerated method for solving nonlinear thermoacoustic eigenvalue problems (CROSBI ID 310197)

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Mensah, Georg A. ; Orchini, Alessandro ; Buschmann, Philip ; Grubišić, Luka A subspace-accelerated method for solving nonlinear thermoacoustic eigenvalue problems // Journal of sound and vibration, 520 (2022), 116553, 5. doi: 10.1016/j.jsv.2021.116553

Podaci o odgovornosti

Mensah, Georg A. ; Orchini, Alessandro ; Buschmann, Philip ; Grubišić, Luka

engleski

A subspace-accelerated method for solving nonlinear thermoacoustic eigenvalue problems

We propose a method to accelerate the solution of 3D FEM-discretized nonlinear eigenvalue problems by drastically reducing the problem dimension. Our method yields a reduced order model (ROM) via a projection onto a suitable subspace, with eigenpairs identical to the full problem in a region of the complex plane. The subspace is automatically constructed by solving the full problem at a few random points inside the region of interest. The method requires minimal user input and, although exemplified for with a thermoacoustic application, readily generalizes to applications dealing with other vibrational problems.

Thermoacoustics ; Subspace method ; Reduced order model ; Nonlinear eigenvalue problem

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Podaci o izdanju

520

2022.

116553

5

objavljeno

0022-460X

1095-8568

10.1016/j.jsv.2021.116553

Povezanost rada

Matematika, Strojarstvo

Poveznice
Indeksiranost