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- W2058863396 abstract "An approach to numerical simulations of acousto-elastic waves in the human head is described, and simulation examples are presented. The primary goal of our work is to construct an efficient and high fidelity numerical simulation tool for investigating such effects as, e.g., acoustic energy transfer to the inner ear via non-airborne pathways. The solver employs a modified form of the volumetric Lippmann–Schwinger integral equation, adapted to high material-contrast problems, and an FFT based stiffness matrix compression implemented for distributed-memory systems enabling large scale (several million unknowns) simulations for realistic geometries. Some of the new aspects of the technique and its applications include (a) extension of the technique for problems involving large density contrasts,in situations involving elastic media; (b)improved, more economical, and more accurate Galerkin discretization scheme involving linear tetrahedral elements; (c) verification of the solver by comparison of its predictions with an exact analytical solution for a sphere composed with layers supporting both compressional and shear waves; (d) applications in representative numerical simulations of mechanisms of energy transfer to the inner human ear and comparative analysis of the pressure distributions in a human head with and without the presence of noise protective devices, carried out with realistic geometry models. [Work supported by AFOSR]." @default.
- W2058863396 created "2016-06-24" @default.
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- W2058863396 date "2009-04-01" @default.
- W2058863396 modified "2023-09-24" @default.
- W2058863396 title "Numerical simulation of propagation of acoustic and elastic waves in human head with fast integral equation solver." @default.
- W2058863396 doi "https://doi.org/10.1121/1.4784146" @default.
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