| Autor: |
E. Riera-Franco de Sarabia, L. Elvira-Segura |
| Rok vydání: |
1998 |
| Předmět: |
|
| Zdroj: |
The Journal of the Acoustical Society of America. 103:2312-2320 |
| ISSN: |
0001-4966 |
| Popis: |
A finite element method (FEM) is presented for the study of nonlinear acoustic standing waves inside a chamber. The method is developed using the Galerkin–Bubnov weighted residual formulation and applied to solve the Lagrangian second-order wave equation, including thermal and viscous dissipation terms. A one-dimensional problem is studied in the frequency domain. Numerical data are compared with analytical results obtained by using a perturbation scheme for the cases of resonance and antiresonance in a rigid-walled tube with one-sided rigid or pressure release boundary condition. The FEM algorithm is shown to be well suited for the study of high-frequency standing wave fields in which the effect of absorption cannot be described by simple analytical expressions. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
