Internal boiling and superheating in vaporizing multicomponent droplets
Abstract
The vaporization and combustion of a miscible multicomponent droplet in a quiescent atmosphere was analyzed by assuming transient-diffusive transport within the droplet, quasi-steady diffusive-convective transport in the gas phase, and ideal solution behavior for the mixture. Results on the vaporization of a binary droplet show that due to the significant liquid-phase diffusional resistance, the vaporization process approximately consists of an initial transient regime, an intermediate, diffusion-limited, almost quasi-steady regime, and a final volatility-limited regime. It is further demonstrated that the entrapment of the volatile components within the rapidly heated droplet interior lead to the initiation of either homogeneous or heterogeneous nucleation.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- 1977
- Bibcode:
- 1977STIN...7826401L
- Keywords:
-
- Diffusion Coefficient;
- Drops (Liquids);
- Phase Transformations;
- Vaporizing;
- Combustion Physics;
- Nucleate Boiling;
- Superheating;
- Vapor Phases;
- Fluid Mechanics and Heat Transfer