The aim of this article is to thoroughly identify the spurious mode that jeopardizes convergence usual upwind numerical schemes for compressible flows when Mach number goes 0. We show long time limit a wave system whose properties and discretization depend on scheme used system. Once identified, filtering method developed removing it from solution stationary low flow. Numerical results confirm ...

Based on its good theoretical properties, the use of entropy variables is an excellent choice for computing compressible flows at low Mach number. In this paper, we discuss in a discontinuous Galerkin discretization Euler equations and generalize numerical flux proposed by Barth to physical conservative variables. Next, compare DG0 based with several other discretizations, also standard finite ...

A numerical investigation has been conducted into the influence of flow compressibility effects around an open-wheeled racing car. A geometry was created to comply with 2012 F1 regulations. Incompressible and compressible CFD simulations were comparedfirstly with models which maintained Reynolds number as Mach number increased, and secondly allowing Mach number and Reynolds number to increase t...

We investigate the accuracy of the Godunov scheme applied to the variable cross-section acoustic equations. Contrarily to the constant cross-section case, the accuracy issue of this scheme in the low Mach number regime appears even in the one-dimensional case; on the other hand, we show that it is possible to construct another Godunov type scheme which is accurate in the low Mach number regime.

Shock waves exist throughout the Universe and are fundamental to understanding the nature of collisionless plasmas. Reformation is a process, driven by microphysics, which typically occurs at high Mach number supercritical shocks. While ongoing studies have investigated this process extensively both theoretically and via simulations, their observations remain few and far between. In this Letter...

The goal of this study is to develop an efficient numerical algorithm applicable to a wide range of compressible multicomponent flows, including nearly incompressible low Mach number flows, flows with strong shocks, multicomponent flows with high density ratios and interfacial physics, inviscid and viscous flows, as well as flows featuring combinations of these phenomena and various interaction...

The self-noise generated by a flat plate immersed in low Mach number flow is predicted using a hybrid RANS-BEM technique. A Reynolds Averaged Navier-Stokes (RANS) simulation is performed of the turbulent flow over the flat plate. The predicted flow field data, such as mean velocity, turbulent kinetic energy and turbulent dissipation rate, is then processed using a statistical noise model and co...