Conveners
A12.01 Numerical methods for acoustics and vibration: S081
- Dionysios Panagiotopoulos (KU Leuven Campus De Nayer)
- Stefan Schoder (IGTE, TU Graz)
- Maarten Hornikx (Eindhoven University of Technology)
A12.01 Numerical methods for acoustics and vibration: P493
- Stefan Schoder (IGTE, TU Graz)
- Dionysios Panagiotopoulos (KU Leuven Campus De Nayer)
- Maarten Hornikx (Eindhoven University of Technology)
A12.01 Numerical methods for acoustics and vibration: S307
- Stefan Schoder (IGTE, TU Graz)
- Dionysios Panagiotopoulos (KU Leuven Campus De Nayer)
A12.01 Numerical methods for acoustics and vibration: S525
- Stefan Schoder (IGTE, TU Graz)
- Dionysios Panagiotopoulos (KU Leuven Campus De Nayer)
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Asaf Kor (Tel Aviv University)09/09/2026, 16:20A12 Numerical, Computational, and Theoretical Acoustics
We study the problem of calculating the acoustic field scattered by a moving rigid object in response to a moving emitter in three-dimensional space. The object is assumed to be locally planar relative to the wavelength, enabling the use of the physical optics approximation to model wave scattering. However, due to the motion of both the emitter and the object, conventional frequency-domain...
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Gustav Eriksson (Uppsala University)09/09/2026, 16:40A12 Numerical, Computational, and Theoretical Acoustics
Most available engineering tools for outdoor acoustic simulation rely on ray-based methods, or sometimes on even simpler energy-based formulas. These simplifications have long been necessary because of the limited computational resources and time frames available to engineers. However, modern numerical methods and the increasing computational density of hardware are bringing fully 3D...
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Holger Waubke (Acoustics Research Institute, รAW)09/09/2026, 17:00A12 Numerical, Computational, and Theoretical Acoustics
In the past a method was presented, that allows to separate frequency components of a moving source. In the wavenumber frequency domain the Doppler shift leads to a rotation of the axis, as long as direction and velocity of the moving source are constant. Originally, a microphone array with 8x8 microphones was used. This leads to a Fourier transformation with eight bins in the direction of...
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Arne Birk Hรถlter (Technische Universitรคt Berlin, Audio Communication Group)09/09/2026, 17:20A12 Numerical, Computational, and Theoretical Acoustics
Wave-based simulation methods are well suited for analyzing acoustic problems in which wave phenomena such as diffraction and scattering play a dominant role. Among these, the finite-difference time-domain (FDTD) method is a robust and versatile approach.This work presents CRUNA, an open-source 3D FDTD solver with an integrated optimization framework based on adjoint gradient computation.While...
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Jie Deng (La Salle, Universitat Ramon Llull)09/09/2026, 17:40A12 Numerical, Computational, and Theoretical Acoustics
Coupled elastoacoustic problems, involving the interaction between an acoustic field and a vibrating structure, play a central role in low- and mid-frequency vibroacoustics. Displacement-based formulations are attractive due to their symmetry and their natural description of structural dynamics; however, their extension to the acoustic field often leads to numerical difficulties, such as...
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Jason Caubriรจre (SATIE UMR CNRS 8029, CY Cergy Paris University)10/09/2026, 09:00A12 Numerical, Computational, and Theoretical Acoustics
Painted wooden heritage objects are complex multilayered systems strongly affected by environmental conditions. In addition to variations of thermohygromechanical properties among layers, which can induce stresses leading to delamination and cracking, observations in museum environments have reported damage likely caused by vibrations such as paint flaking and cracking, leading some...
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Art J.R. Pelling (Technische Universitรคt Berlin)10/09/2026, 09:20A12 Numerical, Computational, and Theoretical Acoustics
Any linear time-invariant system admits a state-space realization. In contrast to classical transfer-function models, state-space formulations remain numerically robust at high orders. They can also be more computationally efficient than block-wise convolution-based rendering, especially for MIMO systems. Another advantage is access to model order reduction methods that produce compact models...
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Dionysios Panagiotopoulos (KU Leuven Campus De Nayer)10/09/2026, 09:40A12 Numerical, Computational, and Theoretical Acoustics
The design of vibroacoustic systems commonly requires repetitive high-fidelity finite element evaluations across wide frequency ranges and for numerous excitation scenarios, at significant computational cost. Conventional model order reduction (MOR) techniques, which are often employed to alleviate this cost, apart from inherently trading off solution accuracy for computational gain, typically...
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Marek Moszyลski (Gdansk University of Technology)10/09/2026, 10:00A12 Numerical, Computational, and Theoretical Acoustics
The rapid development of computational acoustics has enabled the creation of digital twins for a wide range of engineering applications. Among the most versatile numerical approaches are the Finite Element Method (FEM) and the Boundary Element Method (BEM), both of which are now available in advanced commercial packages supporting full-scale acoustic design and verification.However, innovative...
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Likun Luo (Institute of Mechanics and Mechatronics)10/09/2026, 10:40A12 Numerical, Computational, and Theoretical Acoustics
The 2.5D acoustic finite and boundary element methods efficiently solve wave propagation problems for longitudinally invariant geometries by employing a wavenumber decomposition in the invariant direction.However, evaluating the improper Fourier integral across the wavenumber spectrum remains a significant computational challenge, as it relies on the numerical integration of a continuous...
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Shing-Cheung To (University of Southampton)10/09/2026, 11:00A12 Numerical, Computational, and Theoretical Acoustics
Parametric reduced-order models (ROMs) for linear structural dynamics commonly focus on time-invariant parametric settings. However, when parameters vary in time, the governing operators become time-dependent and ROM accuracy must be ensured over a family of admissible parameter trajectories rather than a bounded parameter domain. Direct sampling of this trajectory space is computationally...
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Philip Le (KU Leuven Campus Diepenbeek)10/09/2026, 11:20A12 Numerical, Computational, and Theoretical Acoustics
Broadband acoustic analysis and design of realistic computer-aided design (CAD) geometries are challenging due to the non-affine frequency dependence of the Boundary element method. When combined with isogeometric analysis (IGABEM), exact CAD geometry representation, high accuracy, and relaxed mesh requirements are offered. However, the use of spline-based basis functions increases the...
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