2000/01/01 by Kazuyuki Domon, O. Ishihara, Osamu Ishihara +1 · 1 citation
Chemistry · Engineering · Physics and Astronomy · #Burgers vortex #Centrifugal force #Chemistry #Classical mechanics #Core (optical fiber) #Experimental and Theoretical Physics Studies #Flow (mathematics) #Fluid Dynamics Simulations and Interactions #Horseshoe vortex #Mechanics #Optics #Particle Dynamics in Fluid Flows #Physics #Reynolds number #Ring (chemistry) #Starting vortex #Turbulence #Vortex #Vortex ring
paper · doi:10.1143/jpsj.69.120
openalex publication_date 2000/01/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Mass transport by a vortex ring in water has been studied experimentally. A vortex ring with the Reynolds number in the vicinity of ∼1×10 5 is launched in water by means of an exploding wire. Fine particles injected into a vortex ring at the outlet of vortex driver are carried away with vortex motion. Some particles spin out of the vortex motion and are left behind a vortex ring. But many of them are trapped in a vortex ring and are carried up to the end of water tank which is located at 1.4 m from the vortex driver. Mass analyses of particles show that particles with specific gravity of larger than unity are scattered out of a vortex ring due to a centrifugal force, but those with specific gravity being less than unity are trapped in a vortex core and are carried for a long distance. The result indicates that an efficient mass transport by a vortex ring is realized when the specific gravity of particles is less than that of ambient fluid that supports a vortex ring.