Optimal absorption of acoustical waves by a boundary

Autor: Pascal Omnes, Frédéric Magoulès, Thi Phuong Kieu Nguyen, Anna Rozanova-Pierrat

Publikováno v: SIAM Journal on Control and Optimization
SIAM Journal on Control and Optimization, Society for Industrial and Applied Mathematics, 2021, 59 (1), pp.561-583. ⟨10.1137/20M1327239⟩

In the aim to find the simplest and most efficient shape of a noise absorbing wall to dissipate the acoustical energy of a sound wave, we consider a frequency model described by the Helmholtz equation with a damping on the boundary. The well-posednes

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1e2510106795ffe147242156d70622e2
https://hal.archives-ouvertes.fr/hal-01558043v5/document

Numerical Simulation of an Incompressible Two-Fluid Model

Autor: Christophe Chalons, Michael Ndjinga, Thi-Phuong-Kieu Nguyen

Publikováno v: Finite Volumes for Complex Applications VII-Elliptic, Parabolic and Hyperbolic Problem
Finite Volumes for Complex Applications VII-Elliptic, Parabolic and Hyperbolic Problem, 78, pp.919-926, 2014, Proceedings in Mathematics and Statistics, ⟨10.1007/978-3-319-05591-6_93⟩
Finite Volumes for Complex Applications VII-Elliptic, Parabolic and Hyperbolic Problems ISBN: 9783319055909

We investigate some finite volume methods for the numerical simulation of a flow involving two incompressible phases in mechanical disequilibrium. The model consists of two hyperbolic equations with characteristic fields that are neither linearly deg

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cab365b2a09141daebfea1bcb4e9fa5a
https://hal.uvsq.fr/hal-02173680