On the scalability of CFD tool for supersonic jet flow configurations
Type
Articles dans des revues avec comité de lectureAuthor
Date
2020Journal
Parallel ComputingAbstract
New regulations are imposing noise emissions limitations for the aviation industry which are pushing researchers and engineers to invest efforts in studying the aeroacoustics phenomena. Following this trend, an in-house computational fluid dynamics tool is build 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 grid points. The present work addresses the evaluation of code improvements along with the computational performance of the solver running on a computer with maximum theoretical peak of 2.727 PFlops. Different mesh configurations, whose size varies from a few hundred thousand to approximately one billion grid points, are evaluated in the present paper. Calculations are performed using different workloads in order to assess the strong and weak scalability of the parallel computational tool. Moreover, validation results of a realistic flow condition are also presented in the current work.
Files in this item
- Name:
- DYNFLUID_PC_2020_JUNQUEIRA.pdf
- Size:
- 2.994Mb
- Format:
- Description:
- Article
- Embargoed until:
- 2020-10-07
Collections
Related items
Showing items related by title, author, creator and subject.
-
JUNQUEIRA-JUNIOR, Carlos; AZEVEDO, João Luiz F.; PANETTA, Jairo; WOLF, William R.; YAMOUNI, Sami (Springer, 2019)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 ...
-
NOBRE, Joao Paulo; OUTEIRO, José (Elsevier, 2015)An experimental-numerical methodology is applied to evaluate the residual stresses induced by drilling of Ti-6Al-4V alloy. The influence of ultra-high cutting speeds on the residual stress distribution is analysed. These ...
-
NOBRE, Joao Paulo; STIFFEL, J.-H.; NAU, A.; OUTEIRO, José; BATISTA, Antonio; VAN PAEPEGEM, W.; SCHOLTES, B. (Elsevier, 2013)Residual strains induced by drilling of glass-fibre reinforced polymers (GFRP) were determined using a hybrid experimental-numerical methodology. Experimentally, a set of GFRP specimens were drilled under well-defined ...
-
BRASIL JUNIOR, Antonio Cesar Pinho; MENDES, Rafael C. F.; WIRRIG, Théo; NOGUERA, Ricardo; OLIVEIRA, Felamingo De Taygoara (Springer Science and Business Media LLC, 2019)A design study of propeller hydrokinetic turbines is explored in the present paper, where the optimized blade geometry is determined by the classical Glauert theory applicable to the design of axial flow turbines (hydrokinetic ...
-
BRASIL JUNIOR, Antonio Cesar Pinho; MENDES, Rafael C. F.; LACROIX, Julian; NOGUERA, Ricardo; OLIVEIRA, Taygoara F. (ACTA Editora, 2017)A design study of propeller hydrokinetic turbines is presented. The main objective is to evaluate the optimized geometry for horizontal axis hydrokinetic turbines, take into account the runner design with a different number ...