Electronic computer study of separation flow features around a vibrating cylinder

The nonstationary separation flow around a circular cylinder performing harmonic vibrations across-the stream by an incompressible viscous fluid is investigated in a numerical experiment.Notation d, y, yo diameter, transverse deflection, and amplitude of cylinder vibrations - l spacing between vortices - ₁,₂ angular location of the points of separation - U_o unperturbed stream velocity - V_y velocity of transverse cylinder motion - u velocity of vortex motion - f₁ cylinder vibrations frequency - f vortex shedding frequency - t time - kinematic velocity - Sh₁=f₁d/U_o dimensionless cylinder vibrations frequency, the kinematic Strouhal number - Sh=fd/U_o Strouhal number of vortex shedding - Re=dU_o/ Reynold number - =tU_o/d dimensionless time - ¯y=y/d, ¯y_o=yo/d, ¯l=l/d; /U_o, t₁ period of cylinder vibrations - T=t₁U_o/d dimensionless period of vibrations Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 47, No. 1, pp. 41–47, July, 1984.