Effects of Repulsion and Attraction between Rotating Cylinders in Fluids

Relevance. From the theory of hydrodynamics, it is known about interaction a pair vortices in inviscid fluids. The relevance study conditioned upon presence many studies numerical simulations interactions two or cylinders, but lack research practical installations for observing effects attraction and repulsion fluid media may slow down this area application. Purpose. purpose demonstration possibility effect double air, with calculation approximate magnitude force tending to attract repel each cylinders. Methods. In experiment, plastic cylinders are used, which driven by engines rotate next other air at atmospheric pressure. Numerical simulation shows nature allows predicting generated rotating on other. relationship between directions rotation observed was verified using finite volumes OpenFOAM version 9. Results. started interacting 5-7 cm smaller distance 2-3 created sufficient stabilise vibrations one around thread suspended. that zone high low pressure formed space depending direction rotation. adjacent disks opposite helps circulation cylinder maintain flow velocity gap, reduces attracts them. Conversely, same extinguish compress flows increases objects above stationary repels Conclusions. results provide better understanding processes interaction, link dependence parameters medium demonstrate applying