▪ Abstract An overview of preconditioning for the steady-state compressible inviscid fluid
dynamic equations is presented. Extensions to the Navier-Stokes equations are also …

There is more to the computation of pseudospectra than the obvious algorithm of computing
singular value decompositions on a grid and sending the results to a contour plotter. Other …

We present an Asymptotic-Preserving 'all-speed'scheme for the simulation of compressible
flows valid at all Mach-numbers ranging from very small to order unity. The scheme is based …

Unstructured multigrid techniques for relieving the stiffness associated with high-Reynolds
number viscous flow simulations on extremely stretched grids are investigated. One …

A new scheme, All-Speed-Roe scheme, was proposed for all speed flows. Compared with
traditional preconditioned Roe scheme, All-Speed-Roe scheme changes non-linear …

We consider the steady state equations for a compressible fluid. For low speed flow the
system is stiff since the ratio of the convective speed to the speed of sound is very small. To …

An e cient preconditioned multigrid method is developed for both inviscid and viscous ow
applications on unstructured hybrid grids. The work builds upon recent breakthroughs in …

The low Mach number setting is a singular limiting situation in compressible flows. As Mach
number approaches zero, compressible (density-based) flow solvers suffer severe …

The stability of two vortex pairs is analysed as a model for the vortex system generated by an
aircraft in flaps-down configuration. The co-rotating vortices on the starboard and port sides …

The development of computational gas dynamics (CFD) and computer technologies makes
it possible to design and implement methods for computing unsteady three-dimensional …