Low compressible β-BP3N6

A Two -Step Modification toward Implementing Compressible Source Terms in Low Compressible Flows

Low Mach Number Limit for Viscous Compressible Flows

In this survey paper, we are concerned with the zero Mach number limit for compressible viscous flows. For the sake of (mathematical) simplicity, we restrict ourselves to the case of barotropic fluids and we assume that the flow evolves in the whole space or satisfies periodic boundary conditions. We focus on the case of ill-prepared data. Hence highly oscillating acoustic waves are likely to p...

Computational Framework for Coupling Compressible and Low Mach Number Codes

A hybrid multicode computational method is developed that allows combining compressible and low Mach number codes into a single computational solver. The proposed methodology can be used for integrated simulations ofmulticomponent engineering problems. Theunsteady couplingbetween the two codes is performedvia exchanging time-dependent state information through the interfaces using overlapping m...

Coupling strategies for compressible low Mach number ows

In order to enrich the modelling of uid ows, we investigate in this paper a coupling between two models dedicated to distinct regimes. More precisely, we focus on the in uence of the Mach number as the low Mach case is known to induce theoretical and numerical issues in a compressible framework. A moving interface is introduced to separate a compressible model (Euler with source term) and its l...

Low-mach Preconditioned Boundary Conditions for Compressible Solvers

Approaching the incompressibility limit in CFD applications where compressible, density based solution methods are employed, is accompanied very often not only by slow convergence of the residuals but also by a strong degradation of the solution quality. This issue is particularly severe in turbo-machinery applications, where large variations of flow regimes occur. Low-Mach preconditioning meth...