Numerical modeling of acoustic metamaterials with finite periodicity including viscothermal losses
Examine the use of MOR to accelerate acoustic metamaterial simulations including viscous and thermal losses effects by …
- … incorporating viscous and thermal losses as an impedance-like boundary condition within a numerical solution of acoustic wave equation by the finite element method.
- … solving the full linearized Navier-Stokes equations numerically by the boundary element method.
- … examining various reduced basis approaches for minimizing the complexity of the acoustic mode, including Krylov subspace methods and novel modal decomposition.
- … investigating whether the algebraic structures emerging from periodicity can be exploited for an efficient simulation of finite metamaterials.
- … validating the developed approaches on subwavelength metamaterial applications, arising from acoustic absorbers for buildings and sound barriers.