Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
Validation of a simulation model to predict the drag on cylinders in different tandem arrangements
Submission Author:
Pedro Dallabrida , SC
Co-Authors:
Pedro Dallabrida, Filipe Dutra da Silva
Presenter: Filipe Dutra da Silva
doi://10.26678/ABCM.COBEM2023.COB2023-1538
Abstract
This work aims to achieve a low computational cost mesh with reliable results on the drag for a tandem cylinder case. Varying one parameter at a time for proper comparison, the influence of the average y+ value along both cylinders was considered, as well as the importance of the total thickness of the prismatic cells layers was analyzed. The refinement of the mesh on its depth was also evaluated. Finally, a global refining test was performed using the grid convergence index criteria for evaluating grid convergence. For validation purposes, the results obtained by the meshes were compared with experimental data found in the literature for a turbulent flow with Reynolds number Re = 1.66 x 10E5 and cylinders with diameters D = 0.05715 m. Two cases were analyzed, one in which the center-to-center distance between the cylinders was L = 3.7D and other in which L=1.435D. In both cases, results for the first cylinder were in good agreement with the experimental data. For the second cylinder, however, due to limitations of the modeling, a greater deviation was found.
Keywords
Tandem cylinders, CFD Simulation using OpenFoam
