Published 6 issues per year
ISSN Print: 2152-5102
ISSN Online: 2152-5110
Indexed in
Motion of the Objects of Different Sizes and Shapes on the Surface of a Vortex
ABSTRACT
The study is devoted to the problem of visualization of vortex flows by introducing various markers in a moving fluid. In addition, the study contributes to the problem of measuring the flow characteristics by observing marker trajectories. Experiments were conducted by using polypropylene markers different in size and shape, miscible and immiscible admixtures. The experiments show that the presence of an active marker on the vortex surface changes the flow pattern. Marker trajectories depend on their initial positions and number. All the markers rotate about the vortex center and their own axes. Angular velocities of the both type of rotation are associated functional dependences, which are defined by the flow parameters and marker properties (volume, weight, size and shape). Because of the difference in velocities at the boundaries, the active marker trajectories are feasible not to align with the direction of the flow motion.