Study on the Resolution of Large-Eddy Simulations for Supersonic Jet Flows

Autor(es)

Abreu, Diego F. ; Junqueira-Junior, Carlos ; Dauricio, Eron T. V. ; Azevedo, Joao Luiz F.

• Tipo de documento: Artigo Científico
• Fonte: AIAA AVIATION 2022 FORUM; v. N/A, p. 16-pg., 2022-01-01.

Resumo

The present study is concerned with large-eddy simulations (LES) of supersonic jet flows. The work addresses, in particular, the simulation of a perfectly expanded free jet flow with an exit Mach number of 1.4 and an exit temperature equal to the ambient temperature. Calculations are performed using a nodal discontinuous Galerkin method. The present effort studies the effects of mesh and polynomial refinement on the solution. The present calculations consider computational meshes and polynomial orders such that the number of degrees of freedom (DOFs) in the solution ranges from 50 to 410 million. Mean velocity results and root mean square (RMS) values of velocity fluctuations indicate a better agreement with experimental data as the resolution is increased. The generated data provide a good understanding of the effects of increasing the discretization refinement for LES calculations of jet flows. The present results can guide future simulations of similar flow configurations. (AU)

• Processo FAPESP: 13/07375-0 - CeMEAI - Centro de Ciências Matemáticas Aplicadas à Indústria
• Beneficiário: Francisco Louzada Neto
• Modalidade de apoio: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs
• Processo FAPESP: 18/05524-1 - Modelos de parede para utilização em simulações de grandes escalas de escoamentos turbulentos com efeitos de não equilíbrio
• Beneficiário: Eron Tiago Viana Dauricio
• Modalidade de apoio: Bolsas no Brasil - Doutorado