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- Title
Spectral Stochastic Infinite Element Method in Vibroacoustics.
- Authors
Kronowetter, Felix; Moheit, Lennart; Eser, Martin; Sepahvand, Kian K.; Marburg, Steffen
- Abstract
A novel method to solve exterior Helmholtz problems in the case of multipole excitation and random input data is developed. The infinite element method is applied to compute the sound pressure field in the exterior fluid domain. The consideration of random input data leads to a stochastic infinite element formulation. The generalized polynomial chaos expansion of the random data results in the spectral stochastic infinite element method. As a solution technique, the non-intrusive collocation method is chosen. The performance of the spectral stochastic infinite element method is demonstrated for a time-harmonic problem and an eigenfrequency study.
- Subjects
HELMHOLTZ equation; SOUND pressure; SOUND waves; STOCHASTIC analysis; SPECTRAL analysis (Phonetics)
- Publication
Journal of Theoretical & Computational Acoustics, 2020, Vol 28, Issue 02, pN.PAG
- ISSN
2591-7285
- Publication type
Article
- DOI
10.1142/S2591728520500097