| Abstract: | The results of an experimental investigation of the hydrodynamic forces acting on a circular cylinder oscillating horizontally in water at rest parallel to the free surface are presented. The coefficients of the hydrodynamic forces — the inertia force proportional to the acceleration and the viscous drag proportional to the square of the velocity -are determined. The force coefficients are shown to depend significantly on the dimensionless (divided by the cylinder diameter) amplitude of the oscillations on the interval of variation from 0.5 to 10. In the experiments the maximum values of the Reynolds numbers, calculated from the maximum velocity and the cylinder diameter, were 2.103–8.104.Translated from Izvestiya Akademii Nauk SSSR, Mekhanika Zhidkosti i Gaza, No. 4, pp. 111–115, July–August, 1989. |
