A comprehensive framework for high fidelity computations of two-species compressible turbulent flows

Reynaud, Jolan; Weiss, Pierre-Élie; Deck, Sébastien; Guillen, Philippe

doi:10.1016/j.jcp.2022.111222

Cited by 3 publications

(2 citation statements)

References 64 publications

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“…To study the 4-nozzle launcher configuration, an implicit finite volume formulation of the two-species Navier-Stokes equations, presented in Reynaud et al 2022 [12] is used. This approach enables to define the propulsive gas mixture and the surrounding air as two perfect gases.…”

Section: Two-species Modelmentioning

confidence: 99%

“…The numerical dissipation of the spatial scheme is dynamically optimized based on local properties, especially for turbulent flows containing shocks. Further details concerning the numerical method and implementation of turbulence models can be found in Pechier, Guillen & Cayzac (2001) [28], Deck et al (2002) [29] while the numerical framework dedicated to the resolution of bi-species flows is thoroughly detailed in the paper by Reynaud et al [12].…”

Section: Two-species Modelmentioning

confidence: 99%

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On the Use of Bi-species ZDES for Multi-nozzle Space Launcher Configurations

Reynaud

Weiss²,

Deck³

2022

Flow Turbulence Combust

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Space launchers experience high fluctuating pressure levels during the ascent (for both expendable and reusable launch vehicles) and return phases (for reusable launch vehicles only). To simulate the fluctuating pressure field occurring on such configurations accurately, a numerical workflow combining ZDES Mode 2 (2020) and a hybrid scheme ensuring robustness in shock wave regions and low dissipation levels in vortical regions is used in the framework of bi-species inert flows. The assessment of the performance of this numerical strategy is based on the simulation of a four-nozzle launcher model previously studied experimentally by Musial and Ward [1]. A comparison of pressure coefficients shows that ZDES gives an improvement in the capability of predicting the base pressure over standard RANS models. Spectral analysis of the fluctuating pressure at the wall shows that the flow is dominated by the antisymmetric mode m = 1 contributing to up to 80% of the energy at a dimensionless frequency StD = 0.2.

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Section: Two-species Modelmentioning

confidence: 99%

Section: Two-species Modelmentioning

confidence: 99%

On the Use of Bi-species ZDES for Multi-nozzle Space Launcher Configurations

Reynaud

Weiss²,

Deck³

2022

Flow Turbulence Combust

Self Cite

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A comprehensive framework for robust hybrid RANS/LES simulations of wall-bounded flows in LBM

Husson,

Terracol,

Deck

et al. 2024

Journal of Computational Physics

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A fully automatic and robust hybrid Reynolds-averaged Navier–Stokes/large eddy simulation approach based on the Menter shear stress transport k–ω model

Renard,

Vaquero,

Gand

et al. 2024

Physics of Fluids

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A robust hybrid Reynolds-Averaged Navier–Stokes (RANS)/Large Eddy Simulation (LES) strategy is proposed for a treatment of attached turbulent boundary layers with the RANS Menter Shear Stress Transport (SST) k–ω model irrespective of the grid density and pressure gradient and a quick RANS/LES switching after separation which is automatic, i.e., without shielding-related meshing constraints for the user. This formulation of Zonal Detached Eddy Simulation (ZDES) mode 2 (2020) initially based on the Spalart–Allmaras RANS model relies on local flow quantities providing a RANS shielding identified as a critical limitation of most popular RANS/LES models. The flow sensors are adapted for the SST context and calibrated on RANS boundary-layer-equation solutions over a wide Reynolds-number and pressure-gradient range approaching flow separation and on full Navier–Stokes RANS solutions with separations. The Reynolds-invariant protection includes the outer part of the boundary layer profile, crucial in adverse pressure gradients but ignored by older protection functions such as fd of Delayed Detached Eddy Simulation (DDES) (2006). The shielding resistance to infinite mesh refinement is demonstrated in a flat-plate boundary layer. A second test case involving a backward-facing step shows that the enhanced protection has no detrimental impact on the quick RANS/LES switching thanks to the efficient detection of separation and reinforced destruction of eddy viscosity in gray areas. This indicates that the proposed ZDES mode 2 (2020) Menter SST k–ω achieves safe and automatic RANS shielding of attached boundary layers and efficient RANS/LES switching in massive flow separations, paving the way for its application.

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A comprehensive framework for high fidelity computations of two-species compressible turbulent flows

Cited by 3 publications

References 64 publications

On the Use of Bi-species ZDES for Multi-nozzle Space Launcher Configurations

On the Use of Bi-species ZDES for Multi-nozzle Space Launcher Configurations

A comprehensive framework for robust hybrid RANS/LES simulations of wall-bounded flows in LBM

A fully automatic and robust hybrid Reynolds-averaged Navier–Stokes/large eddy simulation approach based on the Menter shear stress transport k–ω model

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