Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
COMPRESSIBLE FLOW OVER A CIRCULAR CYLINDER USING A VIRTUAL BOUNDARY METHOD
Submission Author:
Jhonathan Solarte Pineda , SP
Co-Authors:
Paulo Greco, Jhonathan Solarte Pineda
Presenter: Jhonathan Solarte Pineda
doi://10.26678/ABCM.COBEM2017.COB17-2619
Abstract
The aim of this work is to present a fluid-structure interaction method, known as virtual boundary method developed for flow modeling. The main purpose is to analyze the behavior of inviscid, compressible flow over a circular cylinder. The virtual boundary method uses two independent grids, one for the fluid and one for the embedded body, where the boundary condition at the surface of the body, is imposed at each time step using calculated body force components of the momentum equations. The solution, is given by a second order of precision, in both space and time, predictorcorrector scheme. The method has several advantages when compared with other CFD methods. The grid generation algorithms for both grids are easy to write and implement, with low computational cost, and complex geometries can be easily modeled. The results are presented in subsonic, transonic and supersonic conditions, showing that, even though the model is inviscid, some characteristics of viscous flow appear in the result due to implicit and artificial viscosity, added to avoid stability problems.
Keywords
CFD, body force, virtual boundary, circular cylinder, Compressible flow
