Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
NUMERICAL STUDY OF THE FLOW AROUND SLENDER BODIES USING A LAGRANGIAN VORTEX METHOD
Submission Author:
Carlos Felipe Carvalho Junior , SP , Brazil
Co-Authors:
Alex Bimbato, Luiz Antonio Alcântara Pereira, Carlos Felipe Carvalho Junior
Presenter: Carlos Felipe Carvalho Junior
doi://10.26678/ABCM.COBEM2017.COB17-0432
Abstract
This work presents the development of a computational program for the numerical study of a two-dimensional, incompressible flow, with constant properties, around airfoils. A Lagrangian approach, which associates the Discrete Vortex Method and the Panel Method, is employed for the analysis of both potential and the viscous flows over a NACA0012 airfoil. The Panel Method is applied in the geometry discretization and the potential flow solution. The airfoil surface is represented by series of flat panels with linearly varying strength vortex distribution, which satisfies the impermeability boundary condition. At each time step of the numerical simulation, discrete vortices are generated near the airfoil surface in order to satisfy the no-slip boundary condition and also to represent the flow boundary layer. These Discrete Vortices are transported to the flow field by advection and by diffusion. The fluid-dynamic loads are calculated and the numerical results are compared with experimental data.
Keywords
Discrete Vortex Method, panel method, Lagrangian approach, flow over airfoils
