Abstract
An experimental investigation of two-phase turbulent mixing of spray droplets with crossflow in a rectangular duct is presented. The liquid droplets are produced by a pressure swirl nozzle. The distribution of water droplets on the cross section and the flow vector field are measured with PIV technology. The effects of a nozzle injection angle (60°, 90° or 120°) and cross airflow velocities in the mixing process are addressed. We conclude that the entrainment and centrifugal force of large vortex leads to uneven droplet distribution and exerts influences on the mixing of droplets and cross flow. Both the strength and the size of large eddies decrease with the mixing development, resulting in weak impact on the droplet. Among three injection angles of nozzle, the nozzle with 60° has the best mixing effect, the nozzle with 90° take second place, and the nozzle with 120° is the worst.
| Original language | English |
|---|---|
| Pages (from-to) | 1681-1684 |
| Number of pages | 4 |
| Journal | Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics |
| Volume | 30 |
| Issue number | 10 |
| State | Published - Oct 2009 |
Keywords
- Crossflow
- Droplets distribution
- Mixing
- PIV
- Vortex