Eventos Anais de eventos
CREEM2025
CREEM 2025 - XXXI Congresso Nacional de Estudantes de Engenharia Mecânica Congresso Nacional de Estudantes de Engenharia Mecânica
Estudo Computacional do Escoamento sobre Geometria Côncava
Submission Author:
Maria Fernanda Araujo Santos Rodrigues , GO , Brazil
Co-Authors:
Maria Fernanda Araujo Santos Rodrigues, Mylena Carvalho Silva, Andreia Aoyagui Nascimento
Presenter: Maria Fernanda Araujo Santos Rodrigues
doi://10.26678/ABCM.CREEM2025.CRE2025-0098
Abstract
This work presents a numerical analysis of two-dimensional flow around an open concave semicircular cy- linder, using the IMERSPEC2D methodology, which combines the Fourier Pseudospectral Method with the Immersed Boundary Method. The computational domain, with dimensionless length and height (Lx = 1.5, Ly = 0.56), and the flow parameters (Re = 40, D = 0.08 m), follow experimental references, using a 512 × 256 grid. The methodology allowed for capturing the transient behavior of the flow, highlighting the periodic formation of vortices in the wake and the influence of concavity on the force distribution over the body. The simulation showed that the concavity alters the vortex shedding pattern, generating asymmetric fluctuations in the lift coefficient. The results validate the effectiveness of the IMERSPEC2D methodology in simulating flows involving complex geometries, with good numerical stability and efficient spatial resolution. This approach proves promising for fluid-structure interaction studies, contributing to the design of aerodynamic devices with unconventional shapes.
Keywords
método pseudoespectral de Fourier, método da fronteira imersa, dinâmica dos fluidos computacional, geometria côncava
