Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
Lagrangian Vortices With Corrected Core-Spreading Method and Large Eddy Simulation (LES)
Submission Author:
Gabriel Ferraz Marcondes de Carvalho , MG
Co-Authors:
Gabriel Ferraz Marcondes de Carvalho, Marília Vidille, Alex Bimbato, Luiz Antonio Alcântara Pereira
Presenter: Gabriel Ferraz Marcondes de Carvalho
doi://10.26678/ABCM.COBEM2023.COB2023-0306
Abstract
This paper contributes with a new methodology blending the corrected core-spreading vortex method and large eddy simulation (LES). The new scheme is characterised by a deterministic and efficient grid-free method. A splitting algorithm is necessary to control the consistency error by maintaining small vortex core sizes, which are used to discretize the vorticity field; that approach incorporates viscosity into vortex simulations. On the other hand, large eddy simulation (LES) is a mathematical model for turbulence used in computational fluid dynamics. In the past, our research group adapted a second-order velocity function structure model to include turbulence modelling in a two-dimensional lagrangian vortex method; however, the viscosity had been incorporated using the random walk method. The paper was structured aiming to discuss important aspects of the new methodology including a test case of the study of aircraft wake development in the vicinity of ground plane, a situation commonly found during landing or takeoff operations at airports around the world.
Keywords
Lagrangian Vortex method, vorticity dynamics, corrected core spreading method, turbulence modeling, aircraft wake dissipation
