Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Study of Viscous Flows Using High-Order Methods and Curved Boundary Treatment
Submission Author:
André Ribeiro de Barros Aguiar , SP
Co-Authors:
André Ribeiro de Barros Aguiar, Fábio Malacco Moreira, Eduardo Jourdan, João Luiz F. Azevedo
Presenter: André Ribeiro de Barros Aguiar
doi://10.26678/ABCM.COBEM2017.COB17-0514
Abstract
In the context of compact high-order numerical schemes in Computational Fluid Dynamics (CFD), a meaning- fully accurate solution can only be obtained if a corresponding high-order curved representation of the true geometrical boundaries is used. An a posteriori approach is used in the present work in order to generate a curved mesh conformed to the surface of the model, i.e., given a common flat sided mesh and a Computer Aided Design (CAD) representation of the geometry, it is possible to generate the curved boundary representation. This approach, however, leads to the presence of invalid cells when highly stretched boundary layer meshes have to be represented. In order to overcome this problem, a moving mesh technique based on the Radial Basis Function (RBF) strategy is employed and results of the capabilities of these solutions are shown for aerospace-like applications.
Keywords
Unstructured High-Order Meshes, Curved Boundaries, Radial Basis Function, moving mesh, CFD
