Harmonic oscillations of a circular cylinder moving with constant velocity in a quiescent fluid

Article Portuguese OPEN
Jan Novaes Recica ; Luiz Antonio Alcântara Pereira ; Miguel Hiroo Hirata (2008)
  • Publisher: Universidade Nove de Julho
  • Journal: Exacta (issn: 1678-5428, eissn: 1983-9308)
  • Subject: TA1-2040 | Engineering (General). Civil engineering (General)
    arxiv: Physics::Fluid Dynamics

The flow around an oscillating circular cylinder which moves with constant velocity in a quiescent Newtonian fluid with constant properties is analyzed. The influences of the frequency and amplitude oscillation on the aerodynamic loads and on the Strouhal number are presented. For the numerical simulation, a cloud of discrete Lamb vortices are utilized. For each time step of the simulation, a number of discrete vortices are placed close to the body surface; the intensity of theirs is determined such as to satisfy the no-slip boundary condition.
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