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ANÁLISE BIDIMENSIONAL DO ESCOAMENTO SUB-CRÍTICO AO REDOR DE UM CILINDRO LISO UTILIZANDO O OPENFOAM
Vittorio Nardin , Rio grande do sul , Brazil
Co-Authors: Vittorio Nardin, jeferson Avila Souza
Presenter: Vittorio Nardin
Aiming to predict the resultant forces on a circular cylinder over an external transverse flow, this paper makes a comparison of the experimental drag and lift coefficients available in literature with the corresponding numerical data obtained with the OpenFOAM software. The Reynolds number of the flow is 10.000, thus, the flow is turbulent with the presence of the vortex shedding phenomenon. Solution independence test and integration time step (time discretization) were taken into account in order to guarantee trustful results. Results indicate calculation of errors lower than 4% for the drag coefficient and lower than 6% for the Strouhal number. This shows the precision of the utilized numerical models in the prediction both for the intensity of the forces and its frequency of oscillation. Pressure and velocity fields are also presented for the whole simulated computational domain.
CFD, OpenFOAM, External flow, Turbulence Models, smooth cylinder