Abstract
We attempted to measure velocity distributions along a radial direction of vortex rings using both smoke wire and hot wire anemometer at an instant when a pair of vortex rings, performing mutual slip-through at Reynolds number Γ/ν=1500, came to locate just in the same plane; the velocity distributions obtained by both methods were found to show fairly good agreement.
The experimental results agreed well with those of the potential theory when the slip-through was successfully achieved.
The characteristics of the temporal velocity variations at fixed locations during the mutual slip-through were examined and clarified experimentally and theoretically.
