Smoke visualization of a row of vortex rings
Abstract
The vortex interactions in a row of ring vortices ejected at a fixed frequency from a circular orifice are investigated experimentally using a smoke-visualization technique (Yamada et al., 1984) in which stroboscopically illuminated still photographs are synchronized with hot-wire-probe readings. Results for two types of interaction, merging and slip-through, are presented graphically and discussed. The location at which merging or slip-through occurs is found to jitter on scales equal to the orifice diameter; this phenomenon is attributed to a feedback mechanism affecting vortex-row interactions.
- Publication:
-
Fluid Control and Measurement
- Pub Date:
- 1986
- Bibcode:
- 1986fcm..conf..645Y
- Keywords:
-
- Flow Characteristics;
- Flow Measurement;
- Flow Visualization;
- Smoke;
- Vortex Rings;
- Cinematography;
- Flow Distribution;
- Hot-Wire Anemometers;
- Fluid Mechanics and Heat Transfer