[PDF] Top 20 Vorticity preserving numerical schemes in compressible aerodynamics

... of numerical diffusion of vortex structures is a key point in many computational fluid dynamics ...of vorticity preserving numerical schemes for the system wave equation, ... Voir le document complet

... equations in each point of the computational ...algorithm in such a way that the computation of the microscopic solution can be avoided by using a simple asymptotic preserving (AP) method ; in ... Voir le document complet

... used in [19]. It started in [16, 17], and was developed in ...The numerical formalism of the general multi-D Glace scheme is developed in ...similar in a sense to differ- ent ... Voir le document complet

... studied in this framework contain very intense rarefaction and shock ...proven in [28] that for some class of Riemann problems, any linearization would yield nonphysical negative density or ...appear ... Voir le document complet

... interested in the simulation of subsonic compressible ows where the driving phenomena are sti source terms and material ...encountered in several indus- trial processes like the ows within the ... Voir le document complet

... [44], in which the positivity-preservation property of methods solving one-dimensional Lagrangian gas dynamics equations, from first-order to high-orders of accuracy, was ...the numerical methods introduced ... Voir le document complet

... developed in this paper along with the positive limitation intro- duced previously are enough to ensure the solution to be admissible, an additional limitation might be required in some ...leads, in ... Voir le document complet

... CONFINEMENT SCHEMES A BSTRACT : Vortices are flow structures of primary interest in a wide range of fluid dynamics applications including wakes, fluid-structure interaction, flow separation and ...the ... Voir le document complet

... spanwise vorticity contours obtained for Mach numbers ...sign vorticity layers interact at the trail- ing edge and roll up into opposite sign vortical structures, leading to a von Kármán vortex ...to ... Voir le document complet

... volume schemes for the solution of hyperbolic problems such as the system (1) generally use a collocated arrangement of the unknowns, which are associated to the cell centers, and apply a Godunov-like technique ... Voir le document complet

... arising in nature are complex and contain several time and space scales, which are difficult to capture in their globality with standard ...Classical numerical procedures such as explicit methods are ... Voir le document complet

... applied in aeronautics, as flow control techniques, is based on the corona discharges, filamentary discharges or glow dis- charges ...locally in regions of high electric field near points or edges prior to ... Voir le document complet

... scheme in the core of this ...approach. In more numerical words, it corresponds to the construction of an approximate/interpolated function defined through given points, the ensemble of these points ... Voir le document complet

... Unstable and Unsteady Aerodynamics : Compared Information from Different Numerical Models Ilya Abalakin, Marianna Braza, Simone Camarri, Alain Dervieux, Bruno Koobus, Tatiana Kozubskaya,[r] ... Voir le document complet

... Conclusion. In the present work, we have proposed a generalization of the entropy preserving property for several ...applied. In addition, the adopted approach yields to derivations of full families ... Voir le document complet

... the numerical solutions with our two ...well–balanced numerical solution slightly oscillates about the steady solution, while the standard numer- ical solution is clearly completely ... Voir le document complet

... the numerical schemes are validated for such ...processes. In the context of optimal consumption and investment problems, such situations arise when transaction fees are paid (see, for example, ... Voir le document complet

... mandatory in finite volume methods, and it is moreover physical: whatever the discontinuities of D, the fluxes ( −D∇u)·n of the exact solution u to (1) are themselves always ...and in general these values ... Voir le document complet

... 2 Formulation mathématique 3 Ici, on traite les modèles complets en supposant que la densité de chaque phase dé- pend de sa propre pression et en généralisant l’analyse aux écoulements multiphasiques. En effet, des ... Voir le document complet

... MUSCL schemes for the Euler equations ensure positivity of density and ...1D schemes and we introduced abstract coefficients allowing for an optimization of the CFL condition (which is thus ...the ... Voir le document complet