Estimation of the Acoustic Field in a Uniform Duct with Mean Flow using Neural Networks
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| Format: | Preprint |
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2025
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| _version_ | 1866913757127507968 |
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| author | Veerababu, D. Ghosh, Prasanta K. |
| author_facet | Veerababu, D. Ghosh, Prasanta K. |
| contents | The study of sound propagation in a uniform duct having a mean flow has many applications, such as in the design of gas turbines, heating, ventilation and air conditioning ducts, automotive intake and exhaust systems, and in the modeling of speech. In this paper, the convective effects of the mean flow on the plane wave acoustic field inside a uniform duct were studied using artificial neural networks. The governing differential equation and the associated boundary conditions form a constrained optimization problem. It is converted to an unconstrained optimization problem and solved by approximating the acoustic field variable to a neural network. The complex-valued acoustic pressure and particle velocity were predicted at different frequencies, and validated against the analytical solution and the finite element models. The effect of the mean flow is studied in terms of the acoustic impedance. A closed-form expression that describes the influence of various factors on the acoustic field is derived. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2503_19412 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Estimation of the Acoustic Field in a Uniform Duct with Mean Flow using Neural Networks Veerababu, D. Ghosh, Prasanta K. Computational Engineering, Finance, and Science Neural and Evolutionary Computing 34A06 G.1.6; I.6.4; J.2 The study of sound propagation in a uniform duct having a mean flow has many applications, such as in the design of gas turbines, heating, ventilation and air conditioning ducts, automotive intake and exhaust systems, and in the modeling of speech. In this paper, the convective effects of the mean flow on the plane wave acoustic field inside a uniform duct were studied using artificial neural networks. The governing differential equation and the associated boundary conditions form a constrained optimization problem. It is converted to an unconstrained optimization problem and solved by approximating the acoustic field variable to a neural network. The complex-valued acoustic pressure and particle velocity were predicted at different frequencies, and validated against the analytical solution and the finite element models. The effect of the mean flow is studied in terms of the acoustic impedance. A closed-form expression that describes the influence of various factors on the acoustic field is derived. |
| title | Estimation of the Acoustic Field in a Uniform Duct with Mean Flow using Neural Networks |
| topic | Computational Engineering, Finance, and Science Neural and Evolutionary Computing 34A06 G.1.6; I.6.4; J.2 |
| url | https://arxiv.org/abs/2503.19412 |