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