Numerical investigation of the flow around a stationary cylinder. / Estudo numérico do escoamento ao redor de um cilindro fixo.

AUTOR(ES)

Leonidio Buk Junior

DATA DE PUBLICAÇÃO

2007

RESUMO

In this work, the incompressible flow around a stationary cylinder is investigated by using the Finite Element Method. Two-dimensional simulations in time domain have been carried out, with Reynolds number varying from 100 to 600, using non-structured meshes with triangular elements. The aim of this work is to analyze the efficiency of Penalty Methods, which is the way that the velocity-pressure coupling problem is treated here, in Navier-Stokes equations solution. The solution convergence from different values of penalty parameter is evaluated and it is suggested a method to estimate it. In addition, it is studied the sensibilty of response when using the mass matrix in consistent or lumped format. At last, a comparison between average drag coefficient, fluctuating lift and Strouhal number obtained here and those found in other publications is shown.

ASSUNTO(S)

flow-induced vibration penalty methods elementos finitos método das penalidades cilindro fixo stationary cylinder finite element methods vibração induzida pelo escoamento

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