دورية أكاديمية
Adjoint characteristic decomposition of one-dimensional waves
| العنوان: | Adjoint characteristic decomposition of one-dimensional waves |
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| المؤلفون: | Magri, L |
| بيانات النشر: | Elsevier BV //dx.doi.org/10.1016/j.jcp.2019.03.032 Journal of Computational Physics |
| سنة النشر: | 2019 |
| المجموعة: | Apollo - University of Cambridge Repository |
| مصطلحات موضوعية: | Adjoint equations, Acoustics, Wave propagation |
| الوصف: | Adjoint methods enable the accurate calculation of the sensitivities of a quantity of interest. The sensitivity is obtained by solving the adjoint system, which can be derived by continuous or discrete adjoint strategies. In acoustic wave propagation, continuous and discrete adjoint methods have been developed to compute the eigenvalue sensitivity to design parameters and passive devices (Aguilar, J. G. et al, 2017, J. Computational Physics, vol. 341, 163-181). In this short communication, it is shown that the continuous and discrete adjoint characteristic decompositions, and Riemann invariants, are connected by a similarity transformation. The results are shown in the Laplace domain. The adjoint characteristic decomposition is applied to a one-dimensional acoustic resonator, which contains a monopole source of sound. The proposed framework provides the foundation to tackle larger acoustic networks with a discrete adjoint approach, opening up new possibilities for adjoint-based design of problems that can be solved by the method of characteristics. |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| العلاقة: | https://www.repository.cam.ac.uk/handle/1810/291278Test |
| DOI: | 10.17863/CAM.38457 |
| الإتاحة: | https://doi.org/10.17863/CAM.38457Test https://www.repository.cam.ac.uk/handle/1810/291278Test |
| حقوق: | Attribution-NonCommercial-NoDerivatives 4.0 International ; https://creativecommons.org/licenses/by-nc-nd/4.0Test/ |
| رقم الانضمام: | edsbas.E7D7A543 |
| قاعدة البيانات: | BASE |
| DOI: | 10.17863/CAM.38457 |
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