Droplet vaporisation in a confined burning jet
Abstract
A theoretical-experimental study is carried out to examine the droplet heating and vaporization occurring in a jet created by an air blast burner operated in a tunnel, firing into a small furnace. The parameters measured are air and fuel flow rates, wall and gas temperatures, and combustion product composition and droplet size. Computed and measured results indicate that the most important parameters affecting the evaporation rate are the droplet diameter and the temperature of the recirculating gases. In parallel with the jet temperature, the CO2 concentration rises in the region before flame ignition as a result of combustion products penetrating through the side surface of the jet. The dominant role of convective heat transfer is stressed.
- Publication:
-
6th International Heat Transfer Conference, Volume 2
- Pub Date:
- 1978
- Bibcode:
- 1978iht.....2....7G
- Keywords:
-
- Combustible Flow;
- Drops (Liquids);
- Evaporation Rate;
- Free Jets;
- Fuel Combustion;
- Fuel Sprays;
- Vaporizing;
- Carbon Dioxide Concentration;
- Convective Heat Transfer;
- Drop Size;
- Gas Temperature;
- Particle Size Distribution;
- Fluid Mechanics and Heat Transfer