Vibration due to Vortex-Inflow in Inclined Cylinder

Abstract

When the cylinder is inserted into the flow, shear layers form due to the separation of the boundary layer around the cylinder. The force of the shear layer rises from the cylinder and continues to grow until a strong opposing shear layer crosses the front shear layer and leads to vortex collapse at the bottom of the river. This repetitive action results in Von Karman Vortex street. The amount of vortices dissolved per unit time is called the vortex dissipation frequency and is not measured by the meaning of the Strouhal number:

here, f_v is the frequency of vortex shedding behind the cylinder.

The formation of a vortex behind a circular cylinder in flow can be illustrated using Gerrard's (1966) diagram. As separation occurs, fluid (a) grows larger and becomes fluid (b) finds its way to the growing layer mouse. The liquid (c) from the cylinder enters the liquid (b), increasing its volume. Thus, two opposing signed vortices were formed and continued to rise upwards away from the cylinder.

Cite as

Ashutosh, & Nitish Munjal. (2020). Vibration due to Vortex-Inflow in Inclined Cylinder. Research and Reviews: Journal of Mechanics and Machines, 2(3), 1–4. http://doi.org/10.5281/zenodo.4072956