Actas de congresos
Inuence Of Different Subgrid Scale Models In Les Of Supersonic Jet Flows
Registro en:
9781624104367
46th Aiaa Fluid Dynamics Conference. American Institute Of Aeronautics And Astronautics Inc, Aiaa, p. , 2016.
2-s2.0-84980396162
Autor
Junqueira-Junior C.
Yamouni S.
Azeved J.L.F.
Wolf W.R.
Institución
Resumen
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Current design constraints have encouraged the studies of aeroacoustics fields around compressible jet flows. The present work addresses the numerical study of subgrid scale modeling for unsteady turbulent jet flows as a preliminary step for future aeroacoustic analyses of main engine rocket plumes. An in-house large eddy simulation (LES) tool is developed in order to reproduce high fidelity results of compressible jet flows. In the present study, perfectly expanded jets are considered because the authors want to emphasize the effects of the jet mixing phenomena. The large eddy simulation formulation is written using the finite difference approach, with an explicit time integration and using a second order spatial discretization. The energy equation is carefully discretized in order to model the energy equation of the filtered Navier-Stokes formulation. The classical Smagorinsky model, the dynamic Smagorinsky model and the Vreman models are the chosen subgrid scale closures for the present work. Numerical simulations of perfectly expanded jets are performed and compared with the literature in order to validate and compare the performance of each subgrid closure in the solver. © 2016, American Institute of Aeronautics and Astronautics. All rights reserved. 2008/57866-1, FAPESP, Fundação de Amparo à Pesquisa do Estado de São Paulo 2013/07375-0, FAPESP, Fundação de Amparo à Pesquisa do Estado de São Paulo 2013/21535-0, FAPESP, Fundação de Amparo à Pesquisa do Estado de São Paulo 309985/2013-7, CNPq, Conselho Nacional de Desenvolvimento Científico e Tecnológico 400844/2014-1, CNPq, Conselho Nacional de Desenvolvimento Científico e Tecnológico 443839/2014-0, CNPq, Conselho Nacional de Desenvolvimento Científico e Tecnológico Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) 46th AIAA Fluid Dynamics Conference, 2016 13 June 2016 through 17 June 2016 175939