Strong scaling of numerical solver for supersonic jet flow configurations

Autor(es)

Junqueira-Junior, Carlos ^[1] ; Azevedo, Joao Luiz F. ^[2] ; Panetta, Jairo ^[3] ; Wolf, William R. ^[4] ; Yamouni, Sami ^[5]

Afiliação do(s) autor(es)

^[1] Ecole Natl Super Arts & Metiers, DynFluid Lab, F-75013 Paris - France

^[2] IAE, DCTA, ALA, BR-12228904 Sao Jose Dos Campos, SP - Brazil

^[3] ITA, DCTA, BR-12228900 Sao Jose Dos Campos, SP - Brazil

^[4] Univ Estadual Campinas, Fac Engn Mecan, Rua Mendeleyev 200, BR-13083860 Campinas, SP - Brazil

^[5] LatAm Experian DataLab, Sao Paulo, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of the Brazilian Society of Mechanical Sciences and Engineering; v. 41, n. 12 DEC 2019.
• Citações Web of Science: 0

Resumo

Acoustics loads are rocket design constraints which push researches and engineers to invest efforts in the aeroacoustics phenomena which is present on launch vehicles. Therefore, an in-house computational fluid dynamics tool is developed in order to reproduce high-fidelity results of supersonic jet flows for aeroacoustic analogy applications. The solver is written using the large eddy simulation formulation that is discretized using a finite-difference approach and an explicit time integration. Numerical simulations of supersonic jet flows are very expensive and demand efficient high-performance computing. Therefore, non-blocking message passage interface protocols and parallel input/output features are implemented into the code in order to perform simulations which demand up to one billion degrees of freedom. The present work evaluates the parallel efficiency of the solver when running on a supercomputer with a maximum theoretical peak of 127.4 TFLOPS. Speedup curves are generated using nine different workloads. Moreover, the validation results of a realistic flow condition are also presented in the current work. (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: 13/21535-0 - Simulação de grandes escalas e aeroacústica de jatos supersônicos perfeitamente expandidos
• Beneficiário: Sami Yamouni
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado