The article is devoted to the analysis of the development of rotational velocity perturbations of circular cylinders of various elongations in an airflow at low Reynolds numbers. Undisturbed motion is a rectilinear motion along the axis of the cylinder. The development of rotational velocity perturbations is investigated using the curved body method. The Navier–Stokes equations are solved by the finite volume method using the freely distributed software package SU2. It is found that rotational velocity perturbations develop if the ratio of the length of the cylinders to their diameter is in the range from 1.5 to 3. The coefficient of the moment of forces for a given dimensionless perturbation of the rotational velocity is maximal if the ratio of the length of the cylinder to the diameter is 2.
A. N. Ryabinin (Sun,) studied this question.