A preprint on HDG method for anisotropy is available online:Numerical investigation of stabilization in the Hybridizable Discontinuous Galerkin method for linear anisotropic elastic equation, arXiv preprint 2403.02862, pp. 1–34, 2024. The associated research report (79 pages) is also available on Hal: On the implementation of Hybridizable Discontinuous Galerkin discretization for…
A preprint is available online:H. Pham, F. Faucher, D. Fournier, H. Barucq, and L. Gizon. Assembling algorithm for Green’s tensors and absorbing boundary conditions for Galbrun’s equation in radial symmetry, arXiv preprint 2401.17080, pp. 1–33, 2024. Abstract Solar oscillations can be modeled by Galbrun’s equation which describes Lagrangian wave displacement in…
Authors : Hélène Barucq, Nathan Rouxelin (Former PhD student of Makutu), Sébastien Tordeux Article published in : Low-order Prandtl-Glauert-Lorentz based Absorbing Boundary Conditions for solving the convected Helmholtz equation with Discontinuous Galerkin methods, Journal of Computational Physics, Volume 468, 2022, (link to the journal) Many wave propagation problems are set in unbounded…
The internal geometry of a wind instrument can be estimated from acoustic measurements. For woodwind instruments, this involves characterizing the inner shape (bore) but also the side holes (dimensions and location). In this study, the geometric parameters are recovered by a gradient-based optimization process, which minimizes the deviation between simulated…
The bassoon is a woodwind instrument with side holes, and it is played with a double cane reed. Today, the French and German models coexist in the orchestra, with a predominance of the German model. They differ mainly by the number and the location of the holes and by the…
We did benchmark Full Waveform Inversion (FWI) tests on a synthetic model featuring 2 holes (tunnels): Synthetic data generated by Hou10ni in the time domain and FWI performed by Hawen in the frequency domain.
