EPTT 2022

13th Spring School on Transition and Turbulence

Simulation of transitional-turbulent temporal jet via high fidelity CFD

Submission Author: Rodrigo José Albuquerque Barreira , SP
Co-Authors: Rodrigo José Albuquerque Barreira, Daniel Garcia-Ribeiro, Lucas Dantas Fernandes, Rodrigo Costa Moura, Vinicius Malatesta
Presenter: Daniel Garcia-Ribeiro

doi://10.26678/ABCM.EPTT2022.EPT22-0042

 

Abstract

 The present work aims to report preliminary results of high-fidelity simulations of a transitional-turbulent planar jet. The so-called temporal approach is followed, where triply periodic boundary conditions are used, allowing to capture the evolution of the jet as a whole over time. High fidelity results are obtained by the Large Eddy Simulation (LES) methodology. In particular, we follow the implicit LES approach, where the numerical method's dissipation is relied upon instead of a classical turbulence model. For that, the incompressible Navier-Stokes equations are simulated by the high-order method called Continuous Galerkin (CG) with a suitable dissipative stabilization technique. All simulations were carried out on the open source Nektar++ platform, for Reynolds number 10000, and provided consistent, albeit preliminary, results for the turbulent flow field.

Keywords

turbulent jets, Implicit LES, spectral element method

 

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