Communication Dans Un Congrès Année : 2022

Large-eddy simulations of turbulent compressible supersonic jet flows using discontinuous Galerkin methods

Résumé

In this work, a discontinuous Galerkin scheme is employed to perform the simulations of supersonic jet flows. A total of four simulations are performed with different meshes and order of accuracy. The number of degrees of freedom from the simulations varies from 50 × 10^6 to 400 × 10^6. The results indicate that by increasing the resolution of simulation, in general, the results got closer to experimental data. The jet lipline is the only region in which this behavior is not observed. It investigated a procedure of using lower-order simulations to initialize high-order simulations and consequently reduce the total time of the simulation using high-order schemes. This strategy is successful and allows to perform high-order simulations with only 5% more computational effort than a complete second-order simulation.

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Dates et versions

hal-04079789 , version 1 (24-04-2023)

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Diego F. Abreu, Carlos Junqueira Junior, Eron Dauricio, João Luiz F. Azevedo. Large-eddy simulations of turbulent compressible supersonic jet flows using discontinuous Galerkin methods. ECCOMAS Congress 2022, 8th European Congress on Computational Methods in Applied Sciences and Engineering,, Jun 2022, Oslo, Norway. pp.1-18, ⟨10.23967/eccomas.2022.162⟩. ⟨hal-04079789⟩
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