École Nationale Supérieure de Mécanique et d'Aérotechnique

Resolvent modelling of subsonic jet noise

When jet noise is cast in the form of a linear input–output problem, the cross-spectral-density (CSD) matrix of the sound field is forced by the CSD of nonlinear interactions via the resolvent operator. The forcing CSD is difficult to compute or measure, but its projection onto t...

A robust and versatile parallel FFT-based mechanical solver for general non-periodic and periodic boundary conditions

General boundary conditions are implemented within a fast Fourier transform framework for linear and non-linear mechanical problems using small or finite transformation formulations. In the context of parallel computing (distributed memory), we present a framework that enables th...