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Title: Un algorithme pour la simulation du transport convectif et de la propagation acoustique à tout nombre de Mach
Authors: Moguen, Yann
Bruel, Pascal
Correia, Paulo
Dick, Erik
Keywords: All Mach schemes
Momentum interpolation
AUSM decomposition
Co-located finite volumes
Convectif transport
Acoustic propagation
Issue Date: Aug-2019
Publisher: HAL
Citation: Moguen, Yann, Pascal Bruel, Paulo Correia, and Erik Dick. 2019. “Un Algorithme Pour La Simulation Du Transport Convectif et de La Propagation Acoustique à Tout Mombre de Mach.” In Actes 24ème Congrès Français de Mécanique. Brest: Association Française de Mécanique (AFM).
Abstract: A pressure-correction algorithm is presented for compressible fluid flow regimes. It is well-suited to si- mulate flows at all levels of Mach number with smooth and discontinuous flow field changes, by providing a precise representation of convective transport and acoustic propagation. The co-located finite volume space discretization is used with the AUSM flux splitting. It is demonstrated that two ingredients are essential for obtaining good quality solutions : the presence of an inertia term in the transporting velo- city expression ; a velocity difference diffusive term in the face pressure expression, with a correct Mach number scaling to recover the hydrodynamic and acoustic low Mach number limits. To meet these two requirements, a new flux scheme, named MIAU, for Momentum Interpolation with Advection Upstream splitting is proposed.
Type: article
Appears in Collections:MAT - Artigos em Livros de Actas/Proceedings

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