Linearized compressible flow

Stable Galerkin reduced order models for linearized compressible flow

Article history: Received 28 February 2008 Received in revised form 19 September 2008 Accepted 15 November 2008 Available online 27 November 2008

Unified Formalism of the Linearized Compressible Flow Fields*

Preconditioners for Linearized Discrete Compressible Euler Equations

We consider a Newton-Krylov approach for discretized compressible Euler equations. A good preconditioner in the Krylov subspace method is essential for obtaining an efficient solver in such an approach. In this paper we compare point-block-Gauss-Seidel, point-block-ILU and point-block-SPAI preconditioners. It turns out that the SPAI method is not satisfactory for our problem class. The point-bl...

Efficient evaluation of the direct and adjoint linearized dynamics from compressible flow solvers

Article history: Received 17 December 2011 Received in revised form 26 June 2012 Accepted 27 June 2012 Available online 20 July 2012

Spectral properties of the linearized compressible Navier-Stokes equation around time-periodic parallel flow

The linearized problem around a time-periodic parallel flow of the compressible Navier-Stokes equation in an infinite layer is investigated. By using the Floquet theory, spectral properties of the evolution operator associated with the linearized problem are studied in detail. The Floquet representation of low frequency part of the evolution operator, which plays an important role in the study ...