Leandro Magalhães
AEROG-LAETA University of Beira Interior, Covilhã 6201-001, Portugal
Rúben Meireles
AEROG-LAETA University of Beira Interior, Covilha 6201-001, Portugal
Andre R. R. Silva
AEROG, LAETA, Aeronautics and Astronautics Research Center, University of Beira Interior, Calcada Fonte do Lameiro 6201-001 Covilha, Portugal
Jorge M. M. Barata
Aerospace Sciences Department, University of Beira Interior, Rua Marques Avila e Bolama, 6201-001 Covilha, Portugal
This work enhances the understanding of droplet dynamics under cryogenics conditions through an in-house developed analytical tool used to predict the supercooling of water droplets. The physical process is based on a full-scale four-stage supercooling process in which the recalescence stage is assumed instantaneous and the crystallization kinematics of the droplet neglected. The transition temperature of each stage is obtained, resorting to a theoretical balance for the droplets internal energy against the heat loss to the environment. In
this way, the representation for the droplets temperature curves alongside the time. The droplets are considered spherical, and the internal motion is so vigorous that complete mixing occurs. The droplets convective effects are accounted for using the Ranz-Marshall classical formulation.